SKU: 89114685119

Pro-Ject Phono Box RS Phono Preamplifier

Sale price$512.55 Regular price$569.50
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Ships within 48 hours · Estimated delivery Jul 18 - Jul 23

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Description

Pro-Ject Phono Box RS Phono PreamplifierOverview MM & MC capable True dual mono design Balanced XLR & unbalanced RCA In & Outputs Fully passive RIAA & DECCA equalisation Reference class phono preamplifier with unique continuously variable impedance control This ultra low noise and low distortion preamplifier is truly made for the audio connoisseur. It offers not only breathtaking performance but is capable of adapting to virtually any phono cartridge through variable its impedance control.

Overview

  • MM & MC capable
  • True dual mono design
  • Balanced XLR & unbalanced RCA In & Outputs
  • Fully passive RIAA & DECCA equalisation

Reference class phono preamplifier with unique continuously variable impedance control

This ultra low-noise and low-distortion preamplifier is truly made for the audio connoisseur. It offers not only breathtaking performance but is capable of adapting to virtually any phono cartridge through variable its impedance control. Impedance adjustment can even be done during playback! Due to the use of premium components, such as the SSM2019 from Analog Devices for the input stages and the Linear Technology LT1010 as its high current buffer stage, Phono Box RS delivers ultra low levels of distortion and noise. Its very low output impedance makes it insensitive to selection of interconnect cables and lengths.

A selector switch permits use of fully passive RIAA or DECCA equalisation. The Phono Box RS offers fully balanced circuitry and both XLR and RCA inputs and outputs. Vinyl playback has never sounded clearer, more detailed and smoother than with this superlative phono stage!

 

Features

  • MM & MC capable
  • True dual mono design
  • Balanced XLR & unbalanced RCA In & Outputs
  • Fully passive RIAA & DECCA equalisation
  • Unique continously variable input impedance loading, matches every cartridge (adjustment even while playing)
  • RCA & XLR In & Out
  • Superior low noise / low distortion
  • Classy & elegant dip switches
  • DC power supply (< 1 watt standby power)
  • Metal casing protects against vibration and interference
  • Faceplate silver or black

Specifications

Input impedance Fixed 10 Ohms or 47kOhms,
  Variable 10 - 1200 Ohms
Load capacity switchable 100pF, 200pF, 300pF, 420pF, 520pF
Output impedance 50 Ohms
Gain, MM / MC RCA: 40, 50, 60 dB
  XLR: 46, 56, 66 dB
Signal to noise ratio 91 dBA
THD 0.019%
RIAA accuracy within 0.3dB/20Hz - 20kHz
SubsonIc 20Hz / - 12 dB
Inputs RCA & XLR
Outputs RCA & XLR
Power supply 2 x 18V/300mA DC; 220 - 240V, 50Hz
Power consumption 150mA DC < 1 watt standby
Dimensions W x H x D (with sockets) 206 x 72 x 210 mm
Weight 2000 g without power supply
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 89114685119

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NC Native
San Leandro, US
★★★★★ 1
Poor quality, easily rips at seams.
Size: Medium, Color: Organic Cotton 5 Black Pack
Fit is great but these things do not hold up. I have some Gap hipsters that are older and they are much higher quality. These rip and tear way too easily.
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Reviewed in the United States on December 15, 2025
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Alanna Humphrey
Omaha, US
★★★★★ 4
Runs small. Get a size up.
Size: Large, Color: Organic Cotton 5 Pack-bwg
Runs a bit small. Kind of tight. Size up.
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Reviewed in the United States on February 26, 2026
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Amelia Bradley
Belleville, US
★★★★★ 3
Elastic band is not great
Size: X-Large, Color: Organic Cotton 5 Black Pack
The cotton material is comfortable and seems like it will last some time because it isn't thin like most. However, I could really use a thicker, more durable elastic band.
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Reviewed in the United States on November 29, 2025
D
doctur44
Natrona Heights, US
★★★★★ 5
Comfortable
Size: Large, Color: Organic Cotton 5 Black Pack
Comfortable and decent looking black underwear in a hipster, boy cut style. Material is soft and lightweight, kind of thin, but since they’re black they’re not see through at all. The elastic band at waist is also thin and not too tight so it’s very comfortable and doesn’t dig in at all. Five identical pairs in the order makes this a decent value, especially at this price and for Organic cotton material. The large size was perfect for me I sized up based on the recommendations). I’m pretty happy with this order.
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Reviewed in the United States on October 17, 2024
R
R. Staley
Cuba, US
★★★★★ 5
Comfortable, great coverage, perfect fit!
Size: Medium, Color: Organic Cotton 5 Black Pack
These boy shorts are the perfect cut and extremely comfortable! They were true to size, great coverage and they fit me great. They stay in place and don't ride up in my pants so that was a huge plus too. Really glad these came in a pack of multiples cause I would definitely want more. I actually might order more anyways cause I like them so much, haha! Definitely recommend these, they are a great price for comfortable, nice quality underwear.
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Reviewed in the United States on October 4, 2024

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