Here is my Q405 clone
For around 15 years ROLA Australia have been agents for Quad-GMBH
and have serviced and repaired everything QUAD, the most sonically impressive solid state amplifier is the current dumping QUAD-405, I build many fine valve amplifiers, and in the past I designed the high power ETI-480,
the DIGI-125 and the LM1875 Gainclone, and the Q405-B makes for a great sounding solid state bipolar amplifier.
the Q405 for sale here is locally built from a German supplied kit, the PCB's are stuffed on a commercial line here in South Australia, and I personally fully assemble and test each amplifier before shipping. These amps have Op-amp upgrades to TI OPA134PA op amps and all QUAD ECO's have been applied.
The amp tests identical to the full spec originally made QUAD 405's, and a double blind test with an original fully restored and upgraded unit and a ROLA 405 there is no sonic difference. The nominal output power is 100W RMS into 8 R per channel,
These amplifiers carry a full 12 month return to base Adelaide warranty (excluding customer damage,
you need to pay for postage both ways, warranty repairs are free with no labor or parts charges).
Modifications are available on request. Build time on average is 14 days,
if I have one in stock built and tested then same day shipping applies.
A full range of spare parts is available for these amplifiers, and optional upgrades which include Sanwah/NCC caps, TI (Burr Brown op amps) and DH labs input connectors can be implemented during assembly. I can also configure our range of Q405 amps for BI-AMPING configurations.
ROLA can also restore and modify your existing Q405's including upgrades just call.