Graham Slee Accession Phono Preamp With PSU1

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If you're serious about vinyl the new Accession is the phono preamp you'll definitely want.

The Accession stereo phono stage preamplifier uses a different kind of technology which reveals much more musical detail and goes even further in relegating vinyl's bad points.

It has some really useful features too - fixed or variable output levels - front panel volume control - selectable EQ settings - and more...

The Sound

The impeccable sound of the Accession stereo phono stage preamp takes music from vinyl and sets it on a new higher pedestal – it's what all vinyl lovers will want to hear.

Previously overlooked technology has been perfected to extract much more of what's hidden in the music on vinyl records.

The resulting sound from the Accession hi-fi phono stage preamp is considerably closer to the music laid down at its recording.

Keeping Interference Out

The Accession goes further than ever in keeping interference out: it has a solid ground plane board; multiple layers of radio frequency filtering; high immunity design, and the V2 casework has stainless steel 'gaskets' behind front and rear panels which seal against electromagnetic disturbances - they provide conductive shielding in contact with board grounds which anodised aluminium panels alone cannot do. 

Record Equalisation Isn't What Most Think It Is

Its design recognises something virtually all other phono preamps don't - that record equalisation isn't what most think it is!

Record equalisation is quite a convoluted process complicated by historical and physical technical limitations - for records to work at all required some considerable compromises simply to cut and press the groove.

This is why record EQ exists and why the phono preamp has the job of correcting it.

But there's something else contributing to the EQ which the phono preamp has to correct — the actual cartridge being used to play records has a rising response.

Here we're not talking about something subtle - it is a real rising response few understand - the cartridge output is rising at a rate of 6dB per octave, a 45 degree slope, and it's completely different to the EQ applied to the record.

Even so, ever since the magnetic cartridge came on the scene - the cartridge type we all use today - phono preamp designers have looked at the combined EQs of record and cartridge as being one.

The Accession Hi-Fi Phono Stage Preamplifier Changes It All

Treating the two quite different EQs separately, the Accession first strips away the cartridge's contribution to the frequency response. It then deals with the record EQ.

Thinking about it, the record's own EQ was applied when the record was recorded, and even if you just bought the record you're playing today that event happened some time ago - whereas the phono cartridge is applying its rising response in real time now as the record is playing - these are two completely separate events in time.

The Features And Their Benefits

The package of features the Accession phono preamp provides makes it really flexible allowing it to fulfill a number of roles.


  • Adjustable and fixed level outputs
  • Volume / output level control
  • RIAA, NAB (American) and FFRR (British) vinyl record EQ's
  • Flat / CA (constant amplitude) alternative EQ
  • Mono / stereo switch
  • Four cartridge capactive loading options: 100pf; 220pf; 320pf and "out"


In a frugal or minimalist vinyl only system the volume control lets it drive a power amp and the fixed outputs can drive a headphone amplifier.

As part of a 'traditional' system the variable outputs can be used into an ADC or sound card to do 'vinyl rips' while the fixed level output is connected to your preamp, integrated amp or receiver for normal listening.

The different record EQ possibilities make it great for archival duties if you have old mono LPs and EPs which don't sound quite right.


  • Input and output connectors: 360° shielded RCA/phono sockets, hard gold plated
  • Input sensitivity range: 1.6mV to 7.2mV (recommended)
  • Output range (for above inputs): 190mV to 857mV
  • Maximum input: 35mV rms
  • Maximum output: 5.2V rms
  • Gain: 41.5dB (119) at 1kHz
  • Input impedance 47k Ohms plus: 100pF / 220pf / 320pf / out
  • Output impedance (driving impedance): 750 Ohm fixed / 470 Ohm variable (will drive 10k Ohms and above)
  • Noise at output: -66dB Quasi-peak 20Hz to 20kHz
  • Distortion: typically 0.01% 20Hz to 20kHz
  • RIAA accuracy: ± 0.3dB
  • Frequency response: <20Hz - 45kHz (-3dB corrected to RIAA)
  • Channel balance: 0.2dB
  • Channel separation: 60dB
  • Power supply: remotely powered using PSU1 linear power supply
  • Size (approx.): W: 107 x H: 50 x D: 195 (mm) inc. jacks

We endeavour to despatch same day for orders placed up to 2pm on available stock items (items with stock message "Usually dispatched within 24 hours"). Please remember to check with us first for a physical stock check if next day delivery is important to you. Any items with stock message "Usually dispatched within 72 hours" are items that we do not hold in stock but order in from the importer or manufacturer as soon as a customer order is recieved. Occasionally these may be delayed beyond 72 hours due to importer/manufacturer stock levels but we will inform you as soon as we can if this is the case.

UK ORDERS:  We despatch the bulk of our UK mainland items on a 24 hour service – Free of Charge.  Non Mainland locations - Isle of Man, Isle of Wight, the Scilly Isles, the Scottish highlands and Islands, the Channel Islands and Northern Ireland may take a day or so longer and are not Free of Charge. Smaller items are delivered using Royal Mail recorded delivery or special delivery. Larger items are delivered using a courier service such as Interlink Express, DPD, UPS or DHL. 

INTERNATIONAL ORDERS: We offer competitive rates which can be confirmed by email. Please just ask – we will need a full delivery address and telephone number. Smaller items are delivered using Royal Mail Small Packets Airmail with International Tracked and/or Signed depending on value of item and availability of the service. Larger International shipments are sent by insured and tracked services using DPD, DHL or UPS. If there are any delays due to specific customs regulations, etc, you will be contacted by Turntableworld or by the courier with a request for any further information required. Customs duties do not apply for shipments into any EU country (for a full list please refer to the EU Country List). Customs duties can apply for countries outside of the EU. Customers in these countries are responsible for all taxes and duties incurred when the items enter their country.

COLLECT IN STORE OR HOME INSTALL:At the request of the manufacturer some items cannot be supplied by mail order but you can click and buy them and then elect to collect them from our store or arrange a home install (if applicable). Applicable items clearly state that they are Collect in store or home install. Once ordered you will receive a message prompting you to contact us by phone or email to arrange for us to deliver and install or to reserve and collect from our store at your convenience, you will also be advised of the delivery time / stock availability as not all Home install / collect in store items are held in stock. 

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