Don’t know if getting a sub 2k pre would do them justice (CJ ET3, etc). So they could be waiting for 6-12 months to pair up.
Well, to be fair, I'm not sure that the rest of your system would do justice for those VAC 30/70 amps either.
Your system, as listed, looks like a nice, balanced entry level system.
I'm don't think that dropping a pair of VAC 30/70 mono-block amps into that system would ever be doing justice without upgrading your analog front end, speakers, preamp, phono preamp, etc.
You may be best to stay with an integrated amp at this point in time.
I would think that you may want an amp with more power, since your Wharfedale speakers are not an easy load.
I'm surprised that you are driving them with your
Melody SP3
(38 wpc).
Do you have a small room, and/or listen at low levels? I see that Wharfedale recommends 50-200 wpc for their Jade 5 speakers.
Perhaps the Allnic T2000 may have enough drive for those speakers.
However, even that may be too much amp for your system.
IMHO, a well balanced system, like you have right now, works best.
Dropping one "much better" component into a system, whether it is speakers, amp, cartridge, phono, etc. won't raise the level all that much.
Unless you are ready to start moving up a level with the rest of your system, your best move might be to just look at a PrimaLuna
DiaLogue Premium HP Integrated. About half the price of the Allnic T2000, but still a very nice step up above your Melody integrated amp.
Offering up to 96 wpc using KT150 tubes, it should be more suitable to drive your Wharfedale jade 5 speakers too.