{"title":"Pro-Ject Headphone Amplifiers \u0026 DACs","description":"\u003cp\u003ePro-Ject headphone amplifiers and DACs — the Head Box family (E, DS3 B, S3 B) and Pre Box S2 Digital DAC\/headphone amp for desktop hi-fi systems.\u003c\/p\u003e","products":[{"product_id":"pro-ject-head-box-e","title":"Pro-Ject Head Box E","description":"\u003ch3\u003ePro‑Ject Head Box E – Compact Discrete Headphone Amplifier\u003c\/h3\u003e\n\u003cp\u003eThe Head Box E is a micro-sized yet powerful headphone amp designed to elevate your listening experience. Packed into a durable metal chassis, it delivers 665 mW into 32 Ω using fully discrete circuitry, making it a standout upgrade for both desktop setups and home hi‑fi systems—available now at Soundium.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e665 mW output @ 32 Ω:\u003c\/strong\u003e Plenty of clean power to drive demanding headphones—removes the limitation of weak headphone jacks\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFully discrete amplifier design:\u003c\/strong\u003e Uses non-integrated components for superior signal control, repairability, and audio purity\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual headphone outputs:\u003c\/strong\u003e One 6.3 mm and one 3.5 mm jack, usable simultaneously for shared listening\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLine-level bypass option:\u003c\/strong\u003e Rear RCA input plus loop-out lets you integrate the amp into your stereo chain without losing signal\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLow distortion \u0026amp; high fidelity:\u003c\/strong\u003e THD+N \u0026lt;0.005%, SNR −105 dBV, frequency response 20 Hz–80 kHz (±0.2 dB)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompact and light:\u003c\/strong\u003e Just 10.3 × 3.7 × 12.0 cm, 0.39 kg – small enough to fit on any desk or shelf\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCustomer Benefits\u003c\/h4\u003e\n\u003cp\u003eThe Head Box E brings studio-grade headphone amplification to your desktop or living room. Its robust power suits a wide range of headphones, while clean, low-noise output enhances clarity and musicality. The dual jacks support shared listening, and the loop-out feature makes it easy to slip into your existing audio setup.\u003c\/p\u003e\n\u003ch4\u003eQuick Specs\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutput power:\u003c\/strong\u003e 665 mW @ 32 Ω\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFrequency response:\u003c\/strong\u003e 20 Hz–80 kHz (±0.2 dB)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTHD+N:\u003c\/strong\u003e \u0026lt;0.005%\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSNR:\u003c\/strong\u003e −105 dBV\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGain:\u003c\/strong\u003e 11 dB\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCrosstalk:\u003c\/strong\u003e 65 dB\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutput impedance:\u003c\/strong\u003e \u0026lt;1 Ω\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeadphone jacks:\u003c\/strong\u003e 6.3 mm and 3.5 mm (usable simultaneously)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLine-level I\/O:\u003c\/strong\u003e RCA input + loop output\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower:\u003c\/strong\u003e 5 V\/0.5 A DC via included USB cable\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandby power:\u003c\/strong\u003e \u0026lt;0.5 W\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 10.3 × 3.7 × 12.0 cm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.39 kg (without power supply)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eWhat’s in the Box\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003ePro‑Ject Head Box E amplifier\u003c\/li\u003e\n\u003cli\u003eUSB power cable (5 V DC)\u003c\/li\u003e\n\u003cli\u003eProtective pouch\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eUse Cases \/ Ideal For\u003c\/h4\u003e\n\u003cp\u003ePerfect for audiophiles seeking a powerful desktop amp, vinyl listeners adding headphone capability, and anyone wanting shared listening with two jacks—clean, portable, and simple amplification.\u003c\/p\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eConnects to any line-level source (DAC, CD player, turntable with phono stage) via RCA. Compatible with headphones from 8–600 Ω. Fits seamlessly into hi-fi chains with bypass output.\u003c\/p\u003e\n\u003ch4\u003ePros \u0026amp; Cons\u003c\/h4\u003e\n\u003cp\u003e\u003cstrong\u003e✅ Pros:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eHigh clean power in a compact form factor\u003c\/li\u003e\n\u003cli\u003eDiscrete circuit design for superior audio performance\u003c\/li\u003e\n\u003cli\u003eDual jacks allow shared listening without adapters\u003c\/li\u003e\n\u003cli\u003eLoop-out lets you integrate it into larger setups\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003e⚠️ Cons:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eNo DAC built in—requires external digital source\u003c\/li\u003e\n\u003cli\u003eNo balanced or digital inputs\u003c\/li\u003e\n\u003cli\u003eRelies on USB adapter—no included plug-in PSU\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe Pro‑Ject Head Box E delivers compact, powerful, and clean headphone amplification in a sleek metal body—perfect for audiophiles seeking quality on a desk or as part of a desktop hi-fi chain, available now at Soundium.\u003c\/p\u003e","brand":"Pro-Ject","offers":[{"title":"Black","offer_id":54402400583948,"sku":"P-BOX-E-BL","price":119.0,"currency_code":"EUR","in_stock":true},{"title":"Silver","offer_id":54402400616716,"sku":"P-BOX-E-SL","price":119.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0711\/7416\/0652\/files\/8641202c-ba95-4660-b5a9-4554f631fe94.jpg?v=1752649298"},{"product_id":"pro-ject-pre-box-s2-digital-edition-23","title":"Pro-Ject Pre Box S2 Digital (Edition 23)","description":"\u003ch3\u003ePro‑Ject Pre Box S2 Digital (Edition 23) – Compact DAC and Preamp with MQA and DSD512 Support\u003c\/h3\u003e\n\u003cp\u003eThe Pro‑Ject Pre Box S2 Digital (Edition 23) is the refined and updated version of one of Pro‑Ject’s most acclaimed DACs. First introduced in 2017, the Pre Box S2 quickly earned a stellar reputation for its transparent sound, remarkable value, and advanced digital performance. The 2023 Edition builds on this legacy with a redesigned power supply, enhanced master audio clocks, a new output stage with higher Class‑A current, and an upgraded headphone amplifier for improved performance with low‑impedance headphones. Compact yet powerful, this preamp\/DAC is a future‑proof solution for both desktop and hi‑fi systems.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual ESS9038Q2M DACs:\u003c\/strong\u003e 32‑bit conversion for ultra‑high‑resolution audio\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdvanced format support:\u003c\/strong\u003e DSD512 (DSD1024 via USB), PCM up to 32‑bit\/768 kHz, and full MQA decoding\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEdition 23 upgrades:\u003c\/strong\u003e Improved internal power supply, redesigned master clocks with lower phase noise, higher Class‑A current output stage, and enhanced headphone amp\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSelectable filters:\u003c\/strong\u003e 7 digital filter settings for customized sound shaping\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompact, efficient design:\u003c\/strong\u003e Low‑power draw with high output capability—ideal for mobile and desktop use\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHandmade in Europe:\u003c\/strong\u003e Rigid aluminum housing designed for longevity\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCustomer Benefits\u003c\/h4\u003e\n\u003cp\u003eThe Pre Box S2 Digital (Edition 23) provides state‑of‑the‑art DAC performance in a compact chassis. Whether used as a high‑end desktop DAC, a headphone amp for low‑impedance IEMs, or a preamp for your hi‑fi setup, it delivers transparent, detailed sound that punches far above its size and price.\u003c\/p\u003e\n\u003ch4\u003eQuick Specs\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDigital inputs:\u003c\/strong\u003e 1× USB‑B, 1× coaxial (RCA), 1× optical (TOSLink)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eD\/A converter:\u003c\/strong\u003e Dual ESS9038Q2M 32‑bit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUSB support:\u003c\/strong\u003e PCM up to 32‑bit\/768 kHz, DSD512 (DSD1024)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOptical \u0026amp; coaxial support:\u003c\/strong\u003e PCM up to 24‑bit\/192 kHz\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFilter settings:\u003c\/strong\u003e 7 selectable on the front panel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFrequency response:\u003c\/strong\u003e 20 Hz – 20 kHz\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAnalog outputs:\u003c\/strong\u003e 6.3 mm headphone jack (front), 1× variable RCA\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutput voltage:\u003c\/strong\u003e 2.05 Veff\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeadphone output power:\u003c\/strong\u003e 6.6 mW @ 600 Ω, 100 mW @ 32 Ω\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMinimum recommended headphone impedance:\u003c\/strong\u003e 8 Ω\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTHD:\u003c\/strong\u003e 0.0003 % @ 0 dB, 2 V RMS, 1 kHz\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDynamic range:\u003c\/strong\u003e 124 dBA\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower supply:\u003c\/strong\u003e 5 V \/ 1 A DC (included)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 10.3 × 3.7 × 12.2 cm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 370 g\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eWhat’s in the Box\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003ePro‑Ject Pre Box S2 Digital (Edition 23)\u003c\/li\u003e\n\u003cli\u003e5 V \/ 1 A DC power supply\u003c\/li\u003e\n\u003cli\u003eUser manual\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eUse Cases \/ Ideal For\u003c\/h4\u003e\n\u003cp\u003ePerfect for desktop audio enthusiasts, headphone users (especially with low‑impedance IEMs), and hi‑fi systems needing a compact but highly capable DAC and preamp with full MQA and DSD support.\u003c\/p\u003e\n\u003ch4\u003ePros \u0026amp; Cons\u003c\/h4\u003e\n\u003cp\u003e\u003cstrong\u003e✅ Pros:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eDual ESS DACs with full MQA and high‑res DSD\/PCM support\u003c\/li\u003e\n\u003cli\u003eEdition 23 upgrades deliver cleaner power, lower jitter, and improved headphone performance\u003c\/li\u003e\n\u003cli\u003eCompact, low‑power design with outstanding sonic transparency\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003e⚠️ Cons:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eNo balanced outputs\u003c\/li\u003e\n\u003cli\u003eLimited output power for high‑impedance headphones\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe Pro‑Ject Pre Box S2 Digital (Edition 23) combines audiophile‑grade DAC technology, an upgraded headphone amp, and a compact form factor—making it an unbeatable value in the high‑res digital audio space. Available now at Soundium.\u003c\/p\u003e","brand":"Pro-Ject","offers":[{"title":"Black","offer_id":54419588219148,"sku":"PJ-BOX-S2-ED23-BL","price":449.0,"currency_code":"EUR","in_stock":true},{"title":"Silver","offer_id":54419588251916,"sku":"PJ-BOX-S2-ED23-SL","price":449.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0711\/7416\/0652\/files\/Pre_box_s2_2023_2.webp?v=1754038181"},{"product_id":"pro-ject-head-box-e-b-stock","title":"Pro-Ject Head Box E (B-Stock)","description":"\u003ch3\u003ePro‑Ject Head Box E – Compact Discrete Headphone Amplifier\u003c\/h3\u003e\n\u003cp\u003eThe Head Box E is a micro-sized yet powerful headphone amp designed to elevate your listening experience. Packed into a durable metal chassis, it delivers 665 mW into 32 Ω using fully discrete circuitry, making it a standout upgrade for both desktop setups and home hi‑fi systems—available now at Soundium.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e665 mW output @ 32 Ω:\u003c\/strong\u003e Plenty of clean power to drive demanding headphones—removes the limitation of weak headphone jacks\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFully discrete amplifier design:\u003c\/strong\u003e Uses non-integrated components for superior signal control, repairability, and audio purity\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual headphone outputs:\u003c\/strong\u003e One 6.3 mm and one 3.5 mm jack, usable simultaneously for shared listening\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLine-level bypass option:\u003c\/strong\u003e Rear RCA input plus loop-out lets you integrate the amp into your stereo chain without losing signal\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLow distortion \u0026amp; high fidelity:\u003c\/strong\u003e THD+N \u0026lt;0.005%, SNR −105 dBV, frequency response 20 Hz–80 kHz (±0.2 dB)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompact and light:\u003c\/strong\u003e Just 10.3 × 3.7 × 12.0 cm, 0.39 kg – small enough to fit on any desk or shelf\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCustomer Benefits\u003c\/h4\u003e\n\u003cp\u003eThe Head Box E brings studio-grade headphone amplification to your desktop or living room. Its robust power suits a wide range of headphones, while clean, low-noise output enhances clarity and musicality. The dual jacks support shared listening, and the loop-out feature makes it easy to slip into your existing audio setup.\u003c\/p\u003e\n\u003ch4\u003eQuick Specs\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutput power:\u003c\/strong\u003e 665 mW @ 32 Ω\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFrequency response:\u003c\/strong\u003e 20 Hz–80 kHz (±0.2 dB)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTHD+N:\u003c\/strong\u003e \u0026lt;0.005%\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSNR:\u003c\/strong\u003e −105 dBV\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGain:\u003c\/strong\u003e 11 dB\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCrosstalk:\u003c\/strong\u003e 65 dB\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutput impedance:\u003c\/strong\u003e \u0026lt;1 Ω\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeadphone jacks:\u003c\/strong\u003e 6.3 mm and 3.5 mm (usable simultaneously)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLine-level I\/O:\u003c\/strong\u003e RCA input + loop output\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower:\u003c\/strong\u003e 5 V\/0.5 A DC via included USB cable\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandby power:\u003c\/strong\u003e \u0026lt;0.5 W\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 10.3 × 3.7 × 12.0 cm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.39 kg (without power supply)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eWhat’s in the Box\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003ePro‑Ject Head Box E amplifier (B-Stock)\u003c\/li\u003e\n\u003cli\u003eUSB power cable (5 V DC)\u003c\/li\u003e\n\u003cli\u003eProtective pouch\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eUse Cases \/ Ideal For\u003c\/h4\u003e\n\u003cp\u003ePerfect for audiophiles seeking a powerful desktop amp, vinyl listeners adding headphone capability, and anyone wanting shared listening with two jacks—clean, portable, and simple amplification.\u003c\/p\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eConnects to any line-level source (DAC, CD player, turntable with phono stage) via RCA. Compatible with headphones from 8–600 Ω. Fits seamlessly into hi-fi chains with bypass output.\u003c\/p\u003e\n\u003ch4\u003ePros \u0026amp; Cons\u003c\/h4\u003e\n\u003cp\u003e\u003cstrong\u003e✅ Pros:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eHigh clean power in a compact form factor\u003c\/li\u003e\n\u003cli\u003eDiscrete circuit design for superior audio performance\u003c\/li\u003e\n\u003cli\u003eDual jacks allow shared listening without adapters\u003c\/li\u003e\n\u003cli\u003eLoop-out lets you integrate it into larger setups\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003e⚠️ Cons:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eNo DAC built in—requires external digital source\u003c\/li\u003e\n\u003cli\u003eNo balanced or digital inputs\u003c\/li\u003e\n\u003cli\u003eRelies on USB adapter—no included plug-in PSU\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe Pro‑Ject Head Box E delivers compact, powerful, and clean headphone amplification in a sleek metal body—perfect for audiophiles seeking quality on a desk or as part of a desktop hi-fi chain, available now at Soundium.\u003c\/p\u003e","brand":"Pro-Ject","offers":[{"title":"Black","offer_id":54551629791500,"sku":"BS-P-BOX-E-BL","price":105.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0711\/7416\/0652\/files\/8641202c-ba95-4660-b5a9-4554f631fe94.jpg?v=1752649298"},{"product_id":"pro-ject-head-box-ds3-b","title":"Pro-Ject Head Box DS3 B","description":"\u003ch3\u003ePro-Ject Head Box DS3 B – Ultra-Powerful Fully Balanced Headphone Amplifier\u003c\/h3\u003e\n\u003cp\u003eThe Pro-Ject Head Box DS3 B is a no-compromise headphone amplifier built for audiophiles who need serious power with absolute control. Featuring a fully balanced, discrete amplifier design, it delivers exceptional drive, ultra-low noise, and refined detail for even the most demanding headphones—engineered for high-end personal audio systems and carefully selected for Soundium.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFully balanced, discrete amplifier topology:\u003c\/strong\u003e Ensures maximum channel separation, minimal distortion, and uncompromised signal purity\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-output power stage:\u003c\/strong\u003e Delivers up to 1500 mW of balanced power for effortless control over demanding headphones\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBalanced and single-ended headphone outputs:\u003c\/strong\u003e Supports 4.4 mm Pentaconn, 4-pin XLR, 6.3 mm, and 3.5 mm connections\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRCA and XLR analogue inputs:\u003c\/strong\u003e Integrates seamlessly into both balanced and unbalanced hi-fi systems\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFull aluminium chassis:\u003c\/strong\u003e Rigid enclosure provides effective shielding, stability, and long-term durability\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCustomer Benefits\u003c\/h4\u003e\n\u003cp\u003eHead Box DS3 B allows high-end headphones to perform without limitations. Its powerful yet controlled amplification improves dynamics, imaging, and low-level detail, while the fully balanced architecture keeps the sound clean and composed even at higher listening levels.\u003c\/p\u003e\n\u003ch4\u003eQuick Specs\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 20.6 x 7.0 x 19.4 cm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 1.43 kg (without power supply)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMax output power:\u003c\/strong\u003e 1500 mW (32 Ω), 560 mW (300 Ω)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeadphone impedance support:\u003c\/strong\u003e Min. 8 Ω\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInputs:\u003c\/strong\u003e RCA, XLR\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeadphone outputs:\u003c\/strong\u003e 3.5 mm, 6.3 mm, 4.4 mm balanced, 4-pin balanced XLR\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eWhat’s in the Box\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003ePro-Ject Head Box DS3 B headphone amplifier\u003c\/li\u003e\n\u003cli\u003eExternal power supply\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eUse Cases \/ Ideal For\u003c\/h4\u003e\n\u003cp\u003eIdeal for audiophiles and headphone enthusiasts using high-impedance or low-sensitivity headphones. Well suited for reference listening setups, desktop hi-fi systems, and high-performance balanced signal chains.\u003c\/p\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eCompatible with balanced and single-ended headphones and analogue source components such as DACs, streamers, and preamplifiers via RCA or XLR connections.\u003c\/p\u003e\n\u003ch4\u003ePros \u0026amp; Cons\u003c\/h4\u003e\n\u003cp\u003e\u003cstrong\u003e✅ Pros:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eExceptional power reserves for demanding headphones\u003c\/li\u003e\n\u003cli\u003eTrue fully balanced, discrete amplifier design\u003c\/li\u003e\n\u003cli\u003eExcellent channel separation and very low noise floor\u003c\/li\u003e\n\u003cli\u003ePremium aluminium construction with refined aesthetics\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003e⚠️ Cons:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eNo digital inputs or internal DAC\u003c\/li\u003e\n\u003cli\u003eLarger footprint than entry-level headphone amplifiers\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe Pro-Ject Head Box DS3 B represents a serious step into high-end headphone amplification. With class-leading power, balanced precision, and robust build quality, it’s a compelling choice for listeners who demand absolute performance from their headphones—available at Soundium.\u003c\/p\u003e","brand":"Pro-Ject","offers":[{"title":"Black","offer_id":54636751749388,"sku":"PJ-BOXDS3B","price":699.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0711\/7416\/0652\/files\/pro-ject-head-box-ds3-b-headphone-amplifier2.jpg?v=1768561215"},{"product_id":"pro-ject-head-box-s3-b","title":"Pro-Ject Head Box S3 B","description":"\u003ch3\u003ePro-Ject Head Box S3 B – Fully Balanced Headphone Amplifier\u003c\/h3\u003e\n\u003cp\u003eThe Pro-Ject Head Box S3 B is a high-performance headphone amplifier designed for listeners who demand precision, clarity, and control. Built around a true fully balanced topology, it supports both balanced and single-ended headphones while integrating effortlessly into desktop and hi-fi systems, delivering refined, low-noise amplification with audiophile accuracy—available through Soundium.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFully balanced signal path:\u003c\/strong\u003e Maximises channel separation and reduces noise for cleaner, more precise sound reproduction\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBalanced and single-ended headphone support:\u003c\/strong\u003e Compatible with 4.4 mm Pentaconn, 4-pin XLR, 6.3 mm, and 3.5 mm headphone connections\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRCA and XLR analogue inputs:\u003c\/strong\u003e Seamlessly integrates with both balanced and unbalanced source components\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOptimised power output:\u003c\/strong\u003e Carefully tuned to drive a wide range of headphone impedances without sacrificing sound quality\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFull aluminium chassis:\u003c\/strong\u003e Rigid, shielded enclosure enhances durability and protects sensitive internal circuitry\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCustomer Benefits\u003c\/h4\u003e\n\u003cp\u003eHead Box S3 B allows headphones to perform at their full potential by combining balanced amplification with controlled output power. The result is improved imaging, tighter bass, and greater detail, whether you are using high-impedance studio headphones or modern low-impedance designs, all within a compact and elegant form.\u003c\/p\u003e\n\u003ch4\u003eQuick Specs\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 20.6 x 5.5 x 15.3 cm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.95 kg (without power supply)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMax output power:\u003c\/strong\u003e 820 mW (32 Ω), 320 mW (300 Ω)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeadphone impedance support:\u003c\/strong\u003e Min. 8 Ω\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInputs:\u003c\/strong\u003e RCA, XLR\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeadphone outputs:\u003c\/strong\u003e 3.5 mm, 6.3 mm, 4.4 mm balanced, 4-pin balanced XLR\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eWhat’s in the Box\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003ePro-Ject Head Box S3 B headphone amplifier\u003c\/li\u003e\n\u003cli\u003eExternal power supply\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eUse Cases \/ Ideal For\u003c\/h4\u003e\n\u003cp\u003eIdeal for audiophiles, headphone enthusiasts, and desktop hi-fi users who want balanced headphone amplification with flexible connectivity. Well suited for critical listening, home studios, and high-quality personal audio setups.\u003c\/p\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eCompatible with balanced and single-ended headphones and analogue source devices via RCA or XLR outputs, including DACs, streamers, and preamplifiers.\u003c\/p\u003e\n\u003ch4\u003ePros \u0026amp; Cons\u003c\/h4\u003e\n\u003cp\u003e\u003cstrong\u003e✅ Pros:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eTrue fully balanced amplification at a compact size\u003c\/li\u003e\n\u003cli\u003eSupports a wide range of headphone connections\u003c\/li\u003e\n\u003cli\u003eExcellent channel separation and low noise floor\u003c\/li\u003e\n\u003cli\u003eSolid aluminium construction with refined design\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003e⚠️ Cons:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eNo digital inputs or internal DAC\u003c\/li\u003e\n\u003cli\u003eSingle analogue loop output only via RCA\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe Pro-Ject Head Box S3 B sets a high benchmark for balanced headphone amplification in its class. With precise engineering, flexible connectivity, and a focus on pure sound quality, it is a compelling choice for serious headphone listening—find it at Soundium.\u003c\/p\u003e","brand":"Pro-Ject","offers":[{"title":"Black","offer_id":54636744835340,"sku":"PJ-BOXS3B","price":399.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0711\/7416\/0652\/files\/1_19fc5840-aee5-4135-913c-8fe7c01aeee0.jpg?v=1768560946"}],"url":"https:\/\/soundium.com\/collections\/pro-ject-headphone-amplifiers-dacs.oembed","provider":"Soundium","version":"1.0","type":"link"}