Lite Audio GA-31a phono preamp, is it a clone?

Did you get it from here?
https://www.hifi-amplifiers.com/en/lite-audio-dac-phono-stage-mmmc-c-89/lite-ga31a-tube-mmmcmoving-c...

If so, seems like a nice price. I'd say that's a win if it's reasonably quiet and performs as intended. 

Hello tablejockey,
I bought it in Italy. It is used but assembled with great care and at a low price. I'll get it next week. Currently it mounts 4 6922 Electra Harmonix tubes but I intend to replace them with 4 Philips 6922 nos valves or with 4 Amperex 6DJ8 orange logo.

It's an unusual circuit in that the tubes are used in what looks like a cascode configuration with transistors doing the amplification. Are the tubes there to add gain or flavor only? There's also a 47uF electrolytic cap on the single-ended input which is not good.

I would give the stock tubes a chance, before putting costly NOS tubes. Also, there may be just one slot where rolling tubes makes a noticeable difference.