Description

Pre Box RS is a reference-grade 2-channel preamplifier featuring fully balanced dual-mono circuitry with a vacuum tube output stage. The circuit design is both ultra-quiet and highly linear with no negative feedback. Operating in pure Class A, it’s capable of producing stunning musical realism from any line level source. There are numerous source connectivity options with the six total inputs (3x RCA pairs, 3x XLR pairs). Top-notch componentry is used throughout including low ESR capacitors, rugged relays, reliable DIP switches and a motor-driven Blue Alps potentiometer to control output level. All circuitry is enclosed in a massive & rigid 2-layer aluminum/steel chassis that is mechanically constructed using anti-microphonic techniques. A robust, highly regulated and filtered outboard power supply delivers ample voltage for impressive dynamic capabilities. For you convenience, a IR remote is also included!

Additional information
Weight1.95 kg
Dimensions21 × 20.6 × 7.2 cm
Color

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Features

  • Fully balanced double mono design
  • Ultra-linear and ultra low noise
  • Pure Class A circuitry
  • Input switching via relay
  • Low ESR capacitors
  • Blue Alps volume control
  • 3 XLR & 3 RCA inputs
  • 1 Pre–out XLR & 1 Record-out RCA
  • DC power supply (< 1 watt standby power)
  • IR remote control included
  • Metal casing protects against vibration and interference
  • Available in black and silver
  • Handmade in Europe

Specs

  • Tubes: 2 x ECC88 (6922)
  • Frequency response: 20Hz – 50kHz (0dB/-0,8dB)
  • Noise floor: 95dB (A weighted)
  • THD: 0,06%
  • Gain XLR and RCA* outputs: XLR 12dB / RCA 6dB for input 1 and input 4, XLR 6dB / RCA 0dB for inputs 2 & 3 and inputs 5 & 6
  • Pre out: 1 pair XLR sockets (balanced connection)
  • Record out: RCA input 1, gain: -6dB
  • Gain ratio input / output signal: RCA inputs 2 & 3, gain 0dB
  • Fixed output signal: XLR input 4 – gain: -6dB, XLR inputs 5 & 6 – gain: 0dB
  • Line-level inputs: 3 pair RCA sockets and 3 pair XLR
  • Input impedance: 150kohms for RCA input 1 and XLR input 4, 30kohms for RCA inputs 2 & 3 and XLR inputs 5 & 6
  • Wiring XLR sockets: 1 ground, 2 “hot” and 3 “cold”
  • Outboard power supply: 20V/3A DC, suitable for your country’s mains supply
  • Power consumption: 700mA DC, <1W in standby
  • Replacement battery remote control: 1 x CR2032 / 3V or 1 x CR2025 / 3V

*Unbalanced connection via supplied connection cable (XLR > RCA).

Upgrades & Add-Ons…