Testing my Blackstar Fly3 OPTO TREMOLO custom mod

Testing another new mod I designed for the Blackstar Fly3 guitar amp - this time TREMOLO.
Just noodling around with a Strat (and no other pedals), and trying the new tremolo speed pot at various settings (including Off).
The tremolo is added using an analogue PCB I designed myself and uses opto (vactrol) style tremolo - same principle as many of the classic blackface amps.
If you like the sound, I am now selling this amp on eBay : www.ebay.co.uk...
Apologies for the poor camera focus on my phone (got knocked off auto-focus) - I'll make a proper demo video for this mod soon!! Thanks for watching!