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Clarinet Audio Design  PHONO  Equaliser 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-wire and has in-house constructed silver lead out wired resistors on tagboard with silver capacitors and in-house made transformers. The input and output connectors are of the highest-grade pure silver. The case of the device is made of aluminium alloy.



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




320 W x 174 H x 470 D (mm)


Weight:   14 kg

Clarinet Audio Design's PHONO Equaliser Preamplifier

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