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RIAA Equaliser Phono Stereo Preamplifier


The Clarinet's PHONO stereo preamplifier is a three stages active RIAA equaliser circuit using the small signal 12AY7/6072 tube.

The device's gain is 35dB at 47kOhm standard input impedance. It works perfectly with any high-output level MC cartridges or low-level output MC's with an added step-up transformer.

The device is fully hardwired - signal and PSU section - with a special silver alloy (Ag) material and has in-house constructed silver lead out wired tantalum resistors on tagboard and silver capacitors. The input and output connectors are of the highest-grade pure silver.


RIAA Equalisation: 


20 Hz - 20 kHz  +/- 0.5 dB​

Gain:  35 dB


Noise:  Less than 1.5 mV

Input impedance:  47 kΩ

Inputs:  1 x RCA (unbalanced) 

Outputs:  1 x RCA (unbalanced)


Vacuum tubes: 


4 x  12AY7 / 6072A

1 x  EZ81 / 6CA4


Power consumption:  15 W


Dimensions  (W x H x D): 


320 mm x 174 mm x 470 mm


Weight:   14 kg

Our company reserve the right to change, modify, add to, or remove any of the content of this site at any time without prior notice. Further the images on this page may differ from current models or specifications.

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