[murphyv310]

The 3-3 is a brilliant amp. I used my home made stereo amp in the house for three years but moved it to the workshop this year.
It drove Tannoy QA 605s pefectly
I slightly modified the feedback via a control for treble boost rather than cut as my HF isn't so good these days. I find the bass control excellent with solid bass down to below 20Hz, I use top quality output transformers though.
There's a simple demo of it on my YouTube channel with pretty rubbish test speakers in the workshop. Adding an extra stage for RIAA equalisation shouldn't be a problem