Keith G wrote:

My record player sounds pretty good, on the whole (it's a Linn Basik
with Linn arm and cartridge that I got about 17 or 18 years ago).

However, on some records, it can sound a bit glassy.

Valve amplification and/or phono stage usually cures most ills with
vinyl replay kit, but what cartridge are you using?

It's a Linn K5.

I hadn't thought it would be an amplification problem, but more likely
to do with the mechanical set-up.

Daniele