Graham Slee Accession MC Phono Stage

Graham Slee Accession MC Phono Stage

A moving coil phono stage with a built-in volume control, hand-built in Britain by Graham Slee. It brings the patented equalisation of the Accession MM to moving coil cartridges. Demonstrations may be possible by arrangement with Graham Slee – just ask.

What Makes It Different

A magnetic cartridge’s output isn’t flat – it rises steeply with frequency. Most phono stages treat the whole signal as the RIAA curve. The Accession corrects the cartridge first, then applies the much smaller record correction. Graham Slee patented the approach, and the result is a more natural, less forced sound from MC.

Features

• 4 loading options: 75, 100, 300 and 500 ohms to suit your cartridge
• Volume control on the variable outputs – drive a power amp directly, no preamp needed
• EQ choices: RIAA, plus NAB and FFRR for 1940s–50s LPs, and a CA/Flat setting
• Mono switch to steady eccentric mono records
• Record while you listen: fixed output to your amp, variable output to a recorder
• Remote PSU1 power supply included, keeping transformer hum away from your cartridge
• Finish: anodised silver or black

Build a System Around It

Use the volume control to run it straight into a pair of Graham Slee Proprius monoblocks for a minimalist vinyl system, or feed it into the analogue input of the Graham Slee Majestic DAC preamp to combine vinyl and digital.

An upgraded PSU1 Enigma power supply is available to order – ask us for details.

Stereo Times called it “utterly transparent” with “ultra-resolution”.

Specification

• Connectors: 360° shielded RCA/phono sockets, hard gold plated
• Input sensitivity range: 0.125mV to 0.84mV (recommended)
• Output range (for above inputs): 145mV to 975mV
• Maximum input: 4.2mV rms
• Maximum output: 4.876V rms
• Gain: 61.3dB (1161) at 1kHz
• Input impedance: 500, 300, 100 and 75 Ohms (300 plus 100 both on)
• Output impedance: 750 Ohm fixed / 470 Ohm variable (will drive ≥10k Ohms)
• Noise at output: -65dB A wtd. 20Hz to 20kHz, 0dBu out
• Distortion: typically 0.02% 20Hz to 20kHz
• RIAA accuracy: ± 0.3dB (sampled)
• Frequency response: 20Hz - 100kHz (±0, −1dB normalised)
• Channel balance: 0.2dB
• Channel separation: 60dB
• Power supply: remotely powered using PSU1 linear power supply
• Size (approx.): W107 x H50 x D195 mm inc. jacks