Nash Rev.b

Phono preamplifier

Preamplifier/equalizer for phono cartridges

The Nash Rev.b is a dedicated preamplifier and phono equalizer for each pickup model. It features two phono inputs, one for low-level MC phono cartridges and one for medium-high level MC phono cartridges and MM phono cartridges.

Its totally discrete component circuit with J-FET input is characterized by very low background noise and high gain, allowing it to reach an output voltage of 2.5 Vrms with 5mV on MM and 170uV on MC. Passive RIAA is implemented with high-precision polypropylene capacitors.

The MC interface parameters (input impedance and MC pre-pre gain) are set via the potentiometer from the rear panel. The MM interface parameters (input impedance and capacitance load) are also set by dip-switches, again from the rear panel.

The Nash Rev.b can be controlled with the front panel encoder and using the included infrared remote control. A menu allows user to set parameters such as: anti-noise filter, MM input gain, etc.

Two line-level auxiliary inputs make the Nash a hub or switching box for analog sources, an interesting plus when the Nash Rev.b is used together with the Young MkIV or other equipment equipped with only one analog input, to take full advantage of the unique analog input available. A Young MkIV Rev.b and Nash based system can have a total of four analogue sources: two phono and two high level (tuner, recorder…).

The noise and sound performance of the Nash can be further increased by replacing the included switching wall power supply with the M2Tech Van der Graaf MKII ultra-low noise power supply.


La prima cosa che mi ha colpito quando ho visto questo pre-phono è stata la sua caratteristica di poter gestire testine sia a magnete mobile (MM) sia a bobina mobile (MC), oltre alla possibilità di configurare i parametri e di controllarlo tramite un'app...
What caught my attention when I first saw this phono preamplifier was that it caters for both moving magnet and moving coil cartridges, and has performance parameters and functions configurable and controllable with an Android app...
Listening test MM / MC phono preamplifier...
Prova d’ascolto Preamplificatore fono MM/MC...
A preamplifier of extraordinary versatility....
Listening test MM / MC phono preamplifier...
M2Tech is a name mainly linked to digital, if only for the historical importance of the famous USB stick> S/PDIF HiFace which introduced countless audiophiles to liquid music; this time we even have a phono stage, dedicated to Graham Nash...
The Nash is an accomplice in delivering a silent background through one's speakers, not only that it keeps the promise of a quite background as far as electrical noise is concerned....
I wondered how the Nash had allowed me to hear this when some other more costly phono stages had rendered the track with matter-of-fact, almost indifference....
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The Nash Rev.b does its best together with…

Van Der Graaf MkII
Low noise power supply to reach higher peaks of sound quality.
Young MkIV Rev.b
Very high resolution digital-to-analog converter and preamplifier.



MM Gain:

selectable between 55 dB, 60 dB and 65 dB

Pre-Pre MC gain:

3 dB to 30 dB

Total MC Gain:

58 dB to 95 dB

MC input impedance:

10 Ohms to 1 kOhms

MM input impedance:

47 kOhm, 15 kOhm

MM input capacitance:

0 pF
100 pF
220 pF
330 pF
any combination of the above values

Signal-to-Noise Ratio:

85 dBA (MM, 60dB gain)
78 dBA (MC, 70dB gain)

Output impedance:

5 Ohms


Inputs and Outputs


MC phono (RCA)
MM phono (RCA)
2 x line level (RCA)
external power supply from Van Der Graaf MkII (4-pole XLR)
trigger (3.5mm jack)


equalized line level (RCA)

Output voltage:

2.5 Vrms (MM, 5mV @ 1kHz input, 55dB gain)


Dimensions and Weight


200x200x50 mm (WxDxH)


net 2 kg (including ancillaries)
gross 2.5 kg


Trigger input voltage:

5 V to 12 V

Output voltage:

Up to 6 Vrms

Supply voltage:

15 VDC (input for adapter supplied)
+5 VDC/+15 VDC/-15 VDC (external power input from Van Der Graaf MkII)

Power consumption:

4 VA
0.23 VA (standby)