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Pro-Ject PJ50438835 Head Box RS Amplifier BLACK
Pro-Ject PJ50438835 Head Box RS Amplifier BLACK
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Pro-Ject PJ50438835 Head Box RS Amplifier BLACK
Brand New · Factory Sealed · Pro-Ject Authorized Dealer
$1,099.99
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Free Canada-wide Shipping Shipped when Received
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Trusted by 150,000+ Canadian customers since 2001
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Highend headphone amplifier

Ultimate highend headphone sound!

Head Box RS is a reference quality headphone amplifier with fully balanced tube input stage (double triode tube 6922) and single ended, class A „FET (Field Effect Transistor)" output stage. It offers balanced and unbalanced input as well as balanced and unbalanced bypass connectors for using the pass-through input signal with other components.

Volume control consists of a precise volume regulator with matched resistance between left and right channel.

A special output impedance selector allows to adjust output impedance in three steps 5, 20 and 50 ohm to achieve better impedance matching between amplifier and headphones. Some experiments with different positions of output impedance selector are highly recommended to get the ultimate sound experience for your headphone.

An advanced multi-stage power supply with four different output voltages is used to achieve the best possible S/N ratio for outstanding reproduction of detail, dynamics and imaging with any dynamic headphone!

Features:

  • Fully balanced double mono design
  • Tube input stage
  • Class-A FET output stage
  • Switchable output impedance for ultimate performance
  • Superior low distortion
  • Low noise components for ultimate dynamic & detail
  • Output: 6.3mm socket
  • Optional Upgrade: Linear power supply Power Box RS Uni 1 (or 4) for further improved sound quality

Specifications:

  • Power output: 350 mW at 32 ohms / 60 mW at 300 ohms
  • Crosstalk: - 58 dB
  • Frequency response: 30 Hz - 20 kHz /(+0,2 dB; -0,05 dB)
  • THD+N: 0.17% (XLR in, output impedance setting 5 ohm, load 32 ohm
  • Gain: 9 dB
  • S/N ratio: 99 dBA
  • Headphone jack: 3-pole ¼" (6.3 mm ) co-axial jack
  • Line-level input: 1 pair RCA + 1 pair XLR
  • Line-level output: 1 pair RCA + 1 pair XLR
  • Outboard power supply: 20 V/3 A DC, suitable for your country's mains supply
  • Power consumption: 1,3 A DC
  • Dimensions W x H x D: 206 x 72 x 200 (209) mm
  • Weight: 2150 g without power supply

Product Details

  • Pro-Ject PJ50438835 
  • Brand New : Factory Sealed
  • EAN : 9120050438835 
  • EFLC : 9800
  • Write a review

Warranty

One Year Warranty

  • Parts and Labour Warranty
  • Canada-wide Coverage
  • Pro-Ject Authorized
View the detailed warranty policy

Returns

Easy Returns

  • 30-day return window on eligible items
  • Full refund issued in accordance with our return policy
View our full return policy

About Pro-Ject

Turntables • Turntable Accessories • Phono Preamps / Stages • Phono Cables / Turntable Cables

Pro-Ject focuses on sound-first products built for music and home theater listening, where clarity, balance, and real-world usability matter. We've been carrying Pro-Ject since 2016.

Explore our current Pro-Ject selection and best sellers. We offer both new and open-box items, and everything is clearly marked. Popular categories include Turntables, Turntable Accessories, Phono Preamps / Stages.

What Our Customers are Saying
150,000+ customers served across Canada since 2001
16 weeks ago
★★★★★
“Great store with super great service. Good selection of products. Way better than Amazon.”
— Bernard L.
43 weeks ago
★★★★★
“Great speakers! Shipping was super fast, ordered Wednesday afternoon and it arrived the next morning.”
— Nancy G.
34 weeks ago
★★★★★
“Super fast delivery. Item as described, zero issues. Highly recommended.”
— Damian K.
20 weeks ago
★★★★★
“Friendly chat support and very quickly shipped. Excellent price on the speakers I purchased. A+.”
— David S.