Love love love this little guy. It is pretty cool in that it can take just about any combo of tubes as it is one pre, one power, and one rectifier. Currently my fav is a 5751 pre, 6V6 power, and 5Y3 rectifier. The Niveus is similar to the 5F2A from what I understand but isn't a true copy (like the White higher fidelity that he also makes). I don't know the particulars, however. One Vol, one Tone.
But man, 7 watts can still be loud! I keep a cel blue in there.
Just an edit because I have to share - MANY years ago I was SO happy to finally get a real Marshall amp - It was a 6100LM. I was in Okinawa, and believe it or not I had it shipped over. Later, in Hong Kong I found a used Marshall JCM2000 2x12 cab and thought ...FINALLY...I can rock.
I had a dual amp setup - a Fender HRD and the Marshall. Gibson 335 and Lonestar Strat. Pedals. OH MAN. Crank it, right?
No.
I couldn't play it at "real volume" anywhere but one outdoor gig we did for a Christmas thing. Found these old pics circa 2001..
I would use half power, triode mode on the Marshall...even had the yellowjacket tube things to reduce the volume but man that wasn't the SOUND of Marshall, of course. Sigh. Led to my DR Z. amp phase (still have one), some rack stuff, Matchless collection, sigh. POD XT LIVE rig...
Wish I would have gone with Fractal long ago.