Graham Slee Solo SRG II Headphone Amp

Graham Slee Solo SRG II Headphone Amp

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Graham Slee is a small, enthusiastic manufacturer of realistically priced, high performance phono stages and headphone amplifiers, designed and built by hand in Yorkshire since 2003. Very positively reviewed by UK and international magazines, demand for these products has been overwhelming as the world's hifi enthusiasts can't believe the performance on offer for the price asked.

Each unit is designed by owner/ engineer Graham Slee and then hand constructed by two skilled electronics engineers before being thoroughly tested to check it meets it's specification and is 100% reliable.

Graham Slee Solo SRG II headphone amp Standing for Studio Reference Green, this  headphone amp is an evolved version of the original design intended to give improved sound quality into a wide range of different headphones. Combining negative feedback and current feedback circuitry, this headphone amp is able to easily control all headphones in the impedance range 16Ω to 600Ω with startling realism of sound and with a huge soundstage.

The drive capability enables all headphone cable impedances to be ignored, such is it's current capability, which contributes to it's amazing bass depth and rhythm.. Controls include a rotary volume control, and input selection from two analogue sources. Housed in an aluminium enclosure of excellent screening from RFI and EMI,  sturdily bult to last a lifetime. A choice of standard or upgrade power supplies are offered, promising even greater fidelity with the use of the PSU1.



 Headphone impedance range 16 to 600 Ohms preferred;
8 to 2,000 Ohms acceptable
Power output (rms, both channels fully driven)  32 Ohms: 27mW/channel;
600 Ohms: 23mW/channel
 Distortion (THD plus noise, ref 1kHz) 0.02% 
 Frequency response (-3dB)  32 Ohms load: 27Hz - 35kHz;
600 Ohms load: 10Hz - 39kHz
 Output noise (20Hz-20kHz, CCIR quasi-peak)  -84dB
Input sensitivity (for specified power output)  32 Ohms: 250mV rms; 600 Ohms: 775mV rms 
Channel balance  better than 1dB, "9 to 3 o'clock" positions 
Crosstalk  Left to Right -57dB; Input to Input -68dB 
 Mute Signal off mute, non-shorting 
Output Stage   Bipolar class AB
 Supply voltage  24V DC
Size (approx.) W: 107 x H: 50 x D: 185 (mm) inc. controls

Providing your item is in stock, the order is usually dispatched within 24 hours. Please remember that postage and packing is completely free for orders over £50*. Out of stock items will be dispatched as soon as they become available, out of stock items can take between 4 to 21 days for dispatch.

Deliveries usually take 1-3 working days. The majority of orders are sent via our couriers'; Interlink Express on a next-day-delivery service. Smaller, low value or light-weight items are normally posted using Royal Mail Recorded or Royal Mail Special Delivery.

Once your product has been dispatched, you will be notified via email and sent a unique consignment number, you can use this number at to check the status of your delivery. If you have provided a mobile telephone number, Interlink's Predict service will notify you by text (and email) of a one-hour delivery window. If the window they suggest is inconvenient, you can change the date of delivery to a later one via text or email.

*We ship free of charge to mainland UK addresses, excluding the Scottish Highlands or 'Out-Of-Reach' Scottish locations. Please consult the post-codes below to see if your location falls within this category. If you are still unsure, please contact us on 01432 354921. We also ship to Northern Ireland, Channel Islands, Scilly Isles, Scottish Isles and Scottish Highlands, however delivery to these locations will incur a charge and can only be sent via a 2-day service.

Shipping CostsMainland UK (Next-Day)Offshore/Out-of-reach (2-day)Northern Ireland, Channel Islands, Isle of Man, Scottish Islands, Scilly IslandsRepublic of Ireland (2-day)
Under £50 Orders £7.50 £12.50 £15.00
Over £50 Orders FREE £19.99 £29.99
Surcharge Orders £50.00 £69.99 £79.99
Saturday Delivery £12.99 N/A N/A
Sunday Delivery £12.99 N/A N/A
Saturday by 12 Delivery £35 N/A N/A


Post codes exempt from the free delivery service include:

Scottish Highlands Post Codes: AB30-38, AB41-42, AB44-56, FK17-99, G83, IV1-28, IV30-39, IV52-54, IV63, KW1-14, PA21-33, PA34-40, PH15-26, PH31-41, PH49-50
Islands Post Codes: HS1-9, IV40-51, IV55-56, KA27-28, KW15-17, PA20, PA41-49, PA60-78, PH42-44, ZE1-3
Northern Ireland: All BT postcodes
Channel Islands Post Codes: JE, GY
Scilly Isles Post Codes: TR21, TR22, TR23, TR24, TR25

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