Superior Performance Hi-Fi Products
By making Headphone Amplifiers which make headphone listening more engaging, relaxing, fun and simply more enjoyable, Graham Slee headphone amplifiers are sought after because of their great three dimensional sound staging and true to life musical delivery.
Headphone amplifiers have become an essential component of any hi-fi system for private listening. Almost unheard of for listening at home until recent years, headphone amplifiers have been used professionally in recording studios and broadcast audio for near on half a century.
It was in broadcast audio and studios that Graham Slee first designed headphone amplifiers where the best sound quality and fatigue-free listening were the pre-requisites. Today our designs go even further, delivering unsurpassed headphone listening satisfaction.
The Graham Slee range of headphone amplifiers are the result of more than 20 years experience in headphone amplifier design.
In the following tabs we introduce you to our current line-up of headphone amplifiers, where you can click through to individual product pages to learn more about them, check specifications, read user and media reviews and see prices.
The Novo is truly inspired! Winning What Hi-Fi's prestigious best headphone amplifier award for three years in a row it has to be special. Discrete means it's made from individual transistors and that's considered high-end, but the Novo is a budget headphone amp... surprising!
Also available in DIY kit form
The Solo started life in 2001 and has seen a decade of continuous improvement, and on its way What Hi-Fi? gave it five stars, warning customers to "be prepared to buy it there and then", if they dared audition it.
The Solo Studio Reference "Green" Mk.II — SRGII for short, is the result of 10 years of innovative headphone amplifier development.
A headphone amplifier truly capable of making good headphones deliver a lifelike, dynamic and breathtaking performance with a real out of head three-dimensional stereo sound stage.
The new Solo Ultra-Linear Diamond Edition - our flagship headphone amplifier - gives you the sound you always wanted from a headphones!
The shirt pocket sized Voyager portable headphone amp makes music on the move a whole new experience...
The Voyager portable is the ideal partner for your portable music devices whos headphone outputs are often limited in performance because battery power is being used for their other functions.
A factory upgrade to Solo Ultra-Linear Diamond Edition spec is available for all old Solo's from mid 2004 onwards - click here. A DIY upgrade is also available - click here. If your Solo isn't already equipped with a PSU1 power supply (see next tab), it is highly recommended to bring out the true Solo Ultra-Linear Diamond Edition sound from your upgrade
The Novo, Solo SRGII "green" and Voyager are sold complete with the switched mode power supply pictured top-right (packaging may vary).
The Solo SRGII is also available complete with the PSU1 power supply instead of the "green", and the Solo Ultra-Linear is only sold complete with the PSU1 - pictured centre and bottom right.
The addition of the PSU1 instead of the "green" power supply makes for a lift in performance as well as a greater sense of scale and openness.
The PSU1 power supply circuit has a precisely optimised Kelvin-current ground return and therefore has superior regulation. This leads to an improvement in stereo precision. It also has a combination of reservoir capacitor types to give the best sound quality.
We occasionally get enquiries from customers who really want a Solo - possibly to get on the Ultra-Linear Diamond Edition upgrade path - but don't have the resources available to purchase one all at once. We're often asked if we have any seconds 'going cheap'. The thing is we don't manufacture seconds, but...
From time to time we receive unwanted "pre-loved" Solo boards after upgrade to Ultra-Linear Diamond Edition spec. If we do the upgrade the old board goes to help toward our costs - we charge very little more than the DIY offer for our labour and the full test we give each unit processed. These pre-loved boards can range from 2004 models up to the SRGII version.
With new products our rigorous quality control rejects case parts for hardly noticeable scratches and blemishes. Sometimes a case part will be OK except for a slight gap that won't close on tightening the screws.
To help those who ask about seconds we can offer to select good used upgrade boards and fit them in B grade cases at a bargain basement price - the exact price will depend on the amount of work involved. As some of these may have been first placed on the market prior to RoHS, some may even contain components you simply cannot obtain anymore such as Elna Starget audio capacitors, but be warned that these do have a sonic signature whereas today our products are carefully crafted to not have any particular signature.
If you think this type of offer would be to your liking please enquire using our contact form here: http://www.gspaudio.co.uk/contact.htm