–Services for B&K preamplifiers are no longer available–
MC-3 Preamp Circuit board
Phono, line and power supplies are on board. Make no mistake! This is a "State of the Art" sound. Factory installation available for the PRO-10 and others. The OPS-8 listed below is always recommended, and sometimes required. Some preamps require the OPS-8(see below).
MC-3 circuit card: $599 installed
Important Note: tone controls/filters are eliminated.
For greater clarity, transparency and naturalness of Elite versions, add $100 for Line Stage/Power Suppl Add $100 extra for Phono stage Elite mods.
Outboard Power Supply
<<<NEW PICTURES SOON>>> What can you expect from an outboard power supply? Getting the best is an enduring investment. The sound is its own reward. Many of our customers wanted custom power supplies so we offer a range of options.
The Sound
OPS-9S(Standard): $299 transformer only - with AC output, to be rectified to DC in target device not recommended for MC-3 installations
OPS-9D(Deluxe): $499(+ DC output)
OPS-10: $799 gorgeous case, premium parts
Installation: $75 labor for any model for most preamp installations
OPS-9 Deluxe and OPS-10 models have one +30VDC and one -30VDC output(values approx). They are equipped with a quiet toroid transformer.
>>>>These power supplies can be delivered with alternate voltages AND for tubed preamps with B+ and heater power supplies.<<<<
Hafler |
Adcom |
B&K |
Dynaco Tube |
Amp Options |
PS-100/220/500 |
Hafler |
Adcom |
B & K |