I have 2 Audio Research CL60 Amplifiers.
one uses GE 6550 and the other one SV6550c, GE tubes sound a little bit better in Bass but SV6550c is a very good tube for the price.
Audio Research uses the class AB1 on CL60 meaning that power tubes are not used at 100% of capability.
Regards
Laurent
one uses GE 6550 and the other one SV6550c, GE tubes sound a little bit better in Bass but SV6550c is a very good tube for the price.
Audio Research uses the class AB1 on CL60 meaning that power tubes are not used at 100% of capability.
Regards
Laurent