Nash Phono Preamplifier

by M2Tech

The Nash is a dedicated preamplifier and phono equalizer for each phono 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.

You can control the Nash with the front panel encoder and using the included infrared remote control. A menu allows you 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 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 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.

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M2Tech Nash

Listening test MM / MC phono preamplifier...

M2Tech Nash

Listening test Phono preamplifier MM/MC...

M2Tech Nash

A preamplifier of extraordinary versatility....

M2Tech Nash

Listening test MM / MC phono preamplifier...

M2Tech Nash

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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....

M2Tech Nash

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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In summary this phono preamp is excellent and I include it in the "must have" notebook....

Audio

MM Gain: selectable between 55 dB, 60 dB and 65 dB Pre-Pre MC Gain: from 3 dB to 30 dB MC Total Earnings: from 58 dB to 95 dB MC input impedance: from 10 Ohm to 1 kOhm Input impedance MM: 47 kOhm, 15 kOhm Input capacity MM: 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

Entrances and Exits

Entrances : phono MC (RCA) phono MM (RCA) 2 x line level (RCA) external power supply from Van Der Graaf MkII (4-pole XLR) trigger (3.5 mm jack) Releases: line level equalized (RCA) Output voltage: 2.5 Vrms (MM, 5mV @ 1kHz input, 55 dB gain)

Dimensions and weight

Dimensions: 200x200x50mm (WxDxH) Weight: net 2.0kg (including accessories) gross 2.5kg

Electric

Trigger input voltage: from 5V to 12V Output voltage: Up to 6 Vrms Supply voltage: 15VDC (input for supplied adapter) +5VDC/+15VDC/-15VDC (external power input from Van Der Graaf MkII) Absorption: 4 VA 0.23 VA (standby)