Assembled X-Altra MC/MM Phono Amplifier

Description

The X-Altra MC/MM Phono preamplifier design was featured in a 2-part article in the prestigious US based magazine ‘audioXpress’ in February and March 2021. It features industry leading ultra-low noise and input overload (>31 dB) performance on both MC and MM inputs. On MM inputs, the 76.5 dB SNR unweighted with cartridge connected is within 0.5 dB of the theoretical maximum, thanks to the all-active 2 x parallel JFET input stage, and a noise floor of -89.5dBA with input shorted. The MC input utilizes a current injection topology amplifier stage which realises lowest spot noise in the industry at 232pV/rt Hz.  RIAA conformance at better than +-0.15 dB from 20Hz-20 kHz and still within 0.8 dB at 50 kHz. The X-Altra MC/MM provides comprehensive gain range and loading (MM) via DIP switches and also features a built-in rumble filter that can be switched by the user to ‘acoustic rumble’ mode via a rear panel switch. Further enhancing the ease of use, the PSU is integrated into the unit – kindly specify mains voltage at time of ordering – 120 or 240 VAC. The unit is housed in a solid aluminium case with a thick brass nameplate as shown in the pictures.  Each unit comes with its own set of test measurements and test certificate.  5-year no quibble warranty.

Kindly allow 4 weeks for delivery. Note prices do NOT include taxes or import duties where applicable – these are for the account of the purchaser. Price includes VAT for UK customers.