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DIY Fit Board: £210
Built To Order
Usually ships within 2 weeks
Buy the latest Solo Ultra-Linear Diamond Edition board for your older Solo and fit it yourself following the instructions on this page.
This upgrade board works with all Solo's made from early 2004 having this appearance.
For the ultimate Ultra-Linear performance you'll also need to buy a PSU1 power supply, unless you already have one. Click here to order your PSU1.
This project is intended for the skilled DIY hobby electronics enthusiast.
For more information continue reading after the purchasing options below.
We strongly advise you to get a demo of the Solo Ultra-Linear Diamond Edition headphone amplifier before embarking on this upgrade. By joining the Graham Slee Audio Forum you can request to borrow one for up to two weeks if you're resident in the UK, USA, Canada, Australia or Europe.
The board offered here is the same as is fitted to our factory made Solo Ultra-Linear Diamond Edition headphone amplifiers. It has been fully tested and meets our specification. For more information visit the Solo Ultra-Linear page here.
The price is substantially lower than if the sum of parts of a new Ultra-Linear is considered. This is because we're not doing the final production testing of a fully built unit, or the packaging, and there is no distribution profit margin - so you make a tidy saving.
We are unable to include the Ultra-Linear panels because if the unit was to be eventually sold it would not be a factory made Ultra-Linear and this wouldn't be fair on the new owner. Therefore, the original panels have to be used.
The instructions on how to fit the board and complete the work follow below. Please note, there are no separate instructions supplied with the board.
Carefully unpack the "europack carton" and only handle the board by its edges. Put it down on a perfectly clean surface free of metalic particles and wire offcuts, and do not drop anything metallic into it.
Then before anything else, remove the top two front panel screws and the top two rear panel screws and lift off the lid of your existing Solo and put it to one side. If it won't lift off easily then slacken the two bottom front panel screws very slightly - but don't forget to tighten them right at the end.
Please ensure you don't lose any parts during the upgrade.
Now carefully follow each stage below . . .
Stage 14: replace the volume control washer, then the nut nipping it up without over tightening to prevent stripping the threads, then turn the volume control shaft fully anti-clockwise and replace the control knob (see stages 1 to 3 in reverse).
Stage 15: replace the lid and the upper two front and rear panel screws and nip tight. If a multi-meter is available test for continuity between any of the phono socket outer contacts and a front panel screw head. This should measure around 1 to 5 Ohms depending on the multi-meter battery condition (essentially it would be zero).
Your upgraded Solo Ultra Linear headphone amplifier is now ready for use.
Get the best out of your Slee. Discover the ways ...
(This board cannot be loaned but you can try the ready built Solo Ultra-Linear DE headphone amplifier)
The International Loaner Program is just one of the brilliant things you get to take part in by becoming a member of the Graham Slee forum.
For specification see the Solo Ultra-Linear Diamond Edition headphone amplifier here...
For reviews see the Solo Ultra-Linear Diamond Edition headphone amplifier here...