I own a no 26 preamp , great preamp.
Buying a pair of no 33 , then changing all the PSU caps.
Presently using a heavly modded Aragon 4004 Mkii.
Increased PSU caps from 4 18000 UF to 4 35000 UF .
Also two bypass caps .1uf and 33uf.
This is used on my IRS v setup.
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