Graham Slee Accession MM phono stage

Loading

It provides 4 cartridge loading options: 1] the standard 100 Ohms many MC cartridges are specified as; 2] 300 Ohms. Why? because it is logarithmically the double of 100 Ohms and our hearing is logarithmic; 3] 500 Ohms - the maximum the design can do without compromising noise; and 4] 75 Ohms by selecting both 100 and 300 Ohms.

Volume control

A manual volume control active on the variable "var" 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 0.3mV cartridge will cause around 350mV at the variable outputs. Also note this volume control can go fully clockwise without adding distortion to the Accession MC outputs (awesome!)

Different EQs

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 what is CA/Flat? It's what the 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's 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.

Recording while you 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 "hot" 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.

The very best of 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'd hear interference from other devices. Make sure you use properly shielded interconnects with it so interference hasn't a chance. Our range of interconnects will help you achieve additional immunity.

Unobtrusive compact design

Our 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.

Remotely powered

The Accession MC uses (and is supplied with) our 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.

Specifications

Follow this link for specifications