Occam posted this in the Lab Circle:
"Goto
http://www.hosfelt.com/click on 'adapters' in the left scroll area
click on
'3-5VDC
Adapters' in upper left
4th one down -
5 VDC @ 1.5 AMP Regulated $US 6.95
Mfg. # - 7202C-3
5-13/16" x 2-1/2" x 2-7/8"
Input: 117 VAC, 60 Hz
Output: 5 VDC @ 1.5 amp. The enclosure and
cords are black. Regulated and filtered.
#56-534
Its a substantial table wart, dunno if the attached plug will fit or if wired correctly for the SB2. "
It is fairly heavy, so shipping will run you another $10-$15.00. The connector is different than the one used in the SB2, so that will have to be changed.
I had one here to try out. That one had a very loud mechanical hum from the transformer. It didn't matter where it was plugged in, straight into the wall or through my Equi=Tech balanced power conditioner.
It did sound "better" to me than the stock power supply. It also sounded "slower" and "muddier" than the "Basic" power supply I build. The Basic rev 1 is even better sounding

I also tried some parts mods on the Hosfelt. I did get it sounding closer to the original Basic, but the hum was too much for me. You may be able to find one without any hum. For the money, it may be worth it to try.