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RB-PA2 Dual Stereo RIAA Phono Amplifier
The RB-PA2
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The RB-PA2 is a dual stereo RIAA equalised phono amplifier. This record player preamp amplifies the small signal from your pick up cartridge (either moving magnet or high output moving coil magnetic) and provides the necessary RIAA equalisation required for vinyl records, to match it to a line input of your mixer, or amplifier. It uses a clean RIAA response making it ideal for use with broadcast turntables and DJ decks and where vinyl records are being archived to CD for high quality transfers, or for converting albums to mp3.

It operates with phono cartridges with a nominal output of 1mV to 25mV and has been specifically tested to work with the Technics SL-1200™ and 1210™ range of turntables. Quality high specification components have been used together with low noise, fast acting operational amplifiers to produce a superbly transparent signal path. Additionally, the RB-PA2 runs without a rumble filter to produce a powerful bass response.

The RB-PA2 is a dual stereo unit to interface up to two turntables. The inputs are phono connectors with Neutrik XLR connectors for the balanced outputs, which may be wired unbalanced if required. Output gain is individually adjustable for left and right channels in the range 35dB to 65dB by using pre-set potentiometers. Frequency response is held within 0.5dB of the RIAA curve and noise is typically better than -84dB RMS A weighted at 40dB gain.

  Specifications
  Audio Specification
Maximum Input Level+28dBu
Input Impedance>47kohms
Input Sensitivity Range1mV to 25mV (ref 1kHz)
Maximum Output Level+28dBu
Output Impedance<50ohms
Output Gain RangeAdjustable -58dB to -30dB via 4 multi-turn pots
CrosstalkBetter than -80dBu at 1kHz
Frequency Response10Hz - 15kHz (-3dB)
RIAA AccuracyWithin 0.5dB of RIAA curve
Distortion0.01% THD @ 1kHz, ref +8dBu output
Noise-77dB (CCIR Q-Pk, 20Hz - 20kHz)
Headroom27dB for 3mV input
Dynamic Range90dB
  Rear Panel Connections
Analogue Inputs4 x RCA phono sockets
Analogue Outputs4 x XLR 3pin male (balanced) (L and R)
Earth TagGrounding turret tag
Mains InputFiltered IEC, switchable 110-120V or 220-240V, fused, 6W max

  Physical Specification
WeightNett: 1.1kg
Gross: 1.5kg
DimensionsRaw: 28cm (W) x 10.8cm (D) x 4.2cm (H) (1U)
Boxed: 36cm (W) x 20.5cm (D) x 6cm (H)

  Equipment Type
  Code  DescriptionPlug
RB-PA2 UKDual Stereo RIAA Phono Amplifier, 230V (UK 3 pin to IEC)UK
RB-PA2 EUDual Stereo RIAA Phono Amplifier, 230V (European Schuko 2 pin to IEC)EU
RB-PA2 USDual Stereo RIAA Phono Amplifier, 115V (USA 3 pin to IEC)US
RB-PA2 AUDual Stereo RIAA Phono Amplifier, 230V (Australasian 3 pin to IEC)AU

  Accessories for this Product
  Code  Description  
RB-RK11U front panel rackmount kit for small RedboxRK3
RB-RK21U rear panel rackmount kit for small RedboxRK3


Sonifex Ltd. 61 Station Road, Irthlingborough, Northants, NN9 5QE, UK.
Tel: +44 (0)1933 650700 Fax: +44 (0)1933 650726 EMail: sales@sonifex.co.uk