Graham Slee Accession MC Moving Coil Phono Stage

Description

Accession MC

Now MC users can enjoy all the benefits of the patented Accession unique equalisation system, by Graham Slee.

Accession MC provides four cartridge loading options: (1) the standard 100 Ohms many MC cartridges are specified as. (2) 300 Ohms, because it is logarithmically the double of 100 Ohms and human hearing is logarithmic. (3) 500 Ohms, the maximum the design can do without compromising noise. (4) 75 Ohms by selecting both 100 and 300 Ohm switches together.

Volume

A manual volume control active on the variable outputs which can be used if the Accession MC is to drive a power amp directly. Required power amp input sensitivity will depend on the cartridge output, but a 0.3 mV cartridge will cause around 350 mV at the variable outputs. Also note this volume control can go fully clockwise without adding distortion to the Accession MC outputs.

EQ

RIAA is the standard recording EQ for most records, so that’s right-hand switch down. But you might have (or could obtain) some older long playing classics from the 1940s and 1950s recorded to NAB or FFRR – those were the most popular American and British EQs before RIAA. And CA/Flat is what your record really sounds like without any equalisation – it is the Constant Amplitude output after applying the Accession’s cartridge equalisation to make it Flat.

Mono

Adding left and right channels together and dividing by two means mono records played on a stereo cartridge will sound mono, and that is what the Accession mono switch does. Use it to remove the left-right swaying effect a slightly eccentric mono record can have. This A+B/2 switch will not render stereo as true mono, giving a tunnel-effect to stereo sound, so ensure it’s switched up when playing stereo records.

Record + Listen

The variable output can also be used to feed a digital recorder (or even a tape recorder!) whilst you listen to the record via the fixed output into your line preamp, integrated amplifier or receiver. Use the volume control to set the right input level into your recording device. Quite often a fixed output level is too much for a digital recorder’s analogue input and results in hard clipping. Turn the volume control down so you get just the right recording level.

EMC Protection

The shielding provided on the Accession MC safeguards against the intrusion of unwanted electro-magnetic disturbances, which at best would colour the sound and at worst you would hear interference from other devices.

Compact Design

The eurocard 1U height cases save on space so you can have more things to enjoy without the worry of where to put them. They will stack on top of each other and will even work on their sides. They’re remotely powered so won’t make other sensitive items hum or buzz.

Remote Power

Accession MC is supplied with the Graham Slee PSU1 power supply which should be placed off-rack, keeping transformer influences away from your sensitive equipment, and most importantly well away from your pick-up cartridge. Remote DC power is the most sensible way to power sensitive equipment. There is no transformer inside your Accession MC to worry about, and no AC on its low voltage cord to induce hum into adjacent cables.

Features

• 4 cartridge loading options.
• Volume control (used if driving a power amp).
• Selectable EQ curves.
• Mono switch option.
• Listen (via fixed output) while you record (via variable output).
• Premium EMC protection.
• Compact 1U design.
• Supplied with Graham Slee PSU1 remote power supply.

Specifications

• Input / Output Connectors: 360-degree shielded RCA / phono sockets, hard gold plated.
• Input Sensitivity: 0.125 mV to 0.84 mV (recommended)
• Output Range (for above inputs): 145 mV to 975 mV
• Maximum Input: 4.2 mV rms
• Maximum Output: 4.876 V rms
• Gain: 61.3 dB (1161) @ 1 kHz
• Input Impedance 500, 300, 100 and 75 Ohms (300 plus 100 both on)
• Output Impedance (Driving Impedance): 750 Ohm fixed OP / 470 Ohm variable OP (will drive >10 kOhms)
• Noise At Output: -65 dB A wtd, 20 Hz to 20 kHz, 0 dBu out
• Distortion: Typically 0.02 %, 20 Hz to 20 kHz
• RIAA Accuracy: &plusm;0.3 dB (sampled)
• Frequency Response: 20 Hz – 100 kHz (&plusm;0, −1 dB normalised)
• Channel Balance: 0.2 dB
• Channel Separation: 60 dB
• Power Supply: Remotely powered using PSU1 linear power supply.
• Size (WxHxD): 107 x 50 x 195 mm inc. jacks.

Included

• 1 x Accession MC.
• 1 x PSU1 Power Supply.

Full Graham Slee Range Available

Unilet Sound & Vision are official retail partners for Graham Slee, providing sales, advice and assistance on their entire range of high-quality products. Please do get in touch if you would like a demonstration or wish to purchase.

More Information

• Accession MC Phono Stage, by Graham Slee

Additional information

Brand

Graham Slee

Graham Slee are Graham, John and Leo, who got together to bring you essential technology for outstanding music reproduction. Graham & John designed and built broadcast audio equipment at Audionics-Sheffield in the 90's, whilst Leo was quality control engineer at Carlsbro Sound. Together trusted to bring quality sound to millions of listeners, the trio have been making their own great-sounding products for the last twenty years.

Graham Slee products are designed to give customers the best listening pleasure available; better than all the rest at (and beyond) their price-points. This is the company mission, one that continues to push at the scientific boundaries of the art.