Allan Holdsworth

In those photos, which show Holdsworth's rig, Yamaha UD-Stomp is visible.

According to this article Allan uses 5 or 6 Magicstomp pedals live.

Here Allan demostrates his Signature OD/Boost!

"The Radial Switchbone sounds great! It is the best ABY box that I have used and the transformer isolation makes it easy to combine any two amps without noise." - Holdsworth about Radial Switchbone.

What about the VG-8? You're not using that anymore?

"No. I sold it out of desperation. But I would have liked to have kept it 'cause it was a useful tool. I actually liked it a lot. I thought it was a really great thing."

“As someone who has been using volume pedals for many, many years and always searching for something better, here it is! The Dunlop Volume pedals are exquisite. They are extremely linear, sonically transparent, and tough as nuts. I love and use both versions! The expression version is great in the studio also, because it has a low impedance input perfect for after FX and I can insert it into the FX send and returns on my console, DI box, line amp, mic amp, etc. and it works beautifully. Done deal.”

“As someone who has been using volume pedals for many, many years and always searching for something better, here it is! The Dunlop Volume pedals are exquisite. They are extremely linear, sonically transparent, and tough as nuts. I love and use both versions! The expression version is great in the studio also, because it has a low impedance input perfect for after FX and I can insert it into the FX send and returns on my console, DI box, line amp, mic amp, etc. and it works beautifully. Done deal.”