Croft specs - too much gain?

[Wegamus]

Did you buy the units new or s/hand ?

The power-amp is normally, virtually silent.

It was pre-owned and about 18 months old. When something’s not brand new you never know if there might be a fault, but I’ve heard from someone who bought a new 25R/7 4 years ago and had the same issue from the start via the Harbeth M30.1 like I have here. Glenn sent him an ECC82 to sort it which did the trick.

After the sale, the seller of my 7R told me he had hiss problems with the 25R/7R too, but when used individually they didn’t cause hiss. Eg DAC feeding the 7R caused no hiss, but DAC volume had to be ramped down to -50dB for normal listening because of the high gain of the 7R; the 25R also gave no hiss problems when used with a different power amp. He told me he used attenuators and a 12BH7A to solve it, and offered them to me.