A3CR Preamp | A3.2CR Preamp | A308cr Preamp | A5CR Preamp | kW Preamp | Nu-Vista Preamp | X-P100 Preamp | X-PREv3
A3CR Preamp upgrade schedule
Update to latest software
Replace output transistors with matched pair and realign output stage
Upgrade op amps to professional spec type
Replace all coupling caps with low ESR, high temp. type
Replace bypass caps from ceramic to polycarbonate/polyester
Replace regulators with selected precision types
Upgrade all audio path electrolytics to low ESR, high temp. type
Replace PSU caps with low ESR, high temp. type
Extensive PSU and choke regulation reworking
Service selector switch and volume control
Log in owner name, model and serial number in Musical Fidelity archives
Issue certificate signed by Antony Michaelson
Soak test for 48 hours
Retail price £499
In the UK we will pay freight to your house.
Overseas clients; all freight charges in both directions, customs clearance charges and duties at your cost.
A3.2CR Preamp upgrade schedule
Service selector switch and volume control
Replace regulators with selected precision types
Replace output transistors with matched pair and realign output stage
Replace bypass caps from ceramic to polycarbonate/polyester
Upgrade all audio path electrolytics to low ESR, high temp. type
Upgrade op amps to professional spec type
Extensive PSU and choke regulation reworking
Replace PSU caps with low ESR, high temp. types
Replace decoupling caps with polycarbonate/polyester type
Update to latest software
Log in owner name, model and serial number in Musical Fidelity archives
Issue certificate signed by Antony Michaelson
Soak test for 48 hours
Retail price £499
In the UK we will pay freight to your house.
Overseas clients; all freight charges in both directions, customs clearance charges and duties at your cost.
A308CR Preamp upgrade schedule
Service selector switch and volume control
Replace output transistors with matched pair and realign output stage
Replace PSU caps with low ESR, high temp. types
Upgrade op amps to professional spec type
Upgrade all audio path electrolytics to low ESR, high temp. type
Replace decoupling caps with polycarbonate/polyester type
Extensive PSU and choke regulation reworking
Replace regulators with selected precision types
Update to latest software
Replace bypass caps from ceramic to polycarbonate/polyester
Log in owner name, model and serial number in Musical Fidelity archives
Issue certificate signed by Antony Michaelson
Soak test for 48 hours
Retail price £499 inc VAT.
In the UK we will pay freight to your house.
Overseas clients; all freight charges in both directions, customs clearance charges and duties at your cost.
A5CR Preamp upgrade schedule
Upgrade all audio path electrolytics to low ESR, high temp. type
Replace regulators with selected precision types
Extensive PSU and choke regulation reworking
Upgrade op amps to professional spec type
Replace PSU caps with low ESR, high temp. types
Replace decoupling caps with polycarbonate/polyester type
Update to latest software
Replace output transistors with matched pair and realign output stage
Replace bypass caps from ceramic to polycarbonate/polyester
Service selector switch and volume control
Log in owner name, model and serial number in Musical Fidelity archives
Issue certificate signed by Antony Michaelson
Soak test for 48 hours
Retail price £499
In the UK we will pay freight to your house.
Overseas clients; all freight charges in both directions, customs clearance charges and duties at your cost.
kW Preamp upgrade schedule
Replace decoupling caps with polycarbonate/polyester type
Service selector switch and volume control
Replace 4 output power transistors with super matched pair
Upgrade op amps to professional spec type
Replace output pre-driver transistors with matched pair
Realign and rebalance complete output stage
Replace regulators with selected precision types
Update to latest software
Replace bypass caps from ceramic to polycarbonate/polyester
Upgrade all audio path electrolytics to low ESR, high temp. type
Replace 4x 6112 tubes with two precision matched pairs
Heater current, audio characteristics and transconductance matched
Replace PSU caps with low ESR, high temp. types
Log in owner name, model and serial number in Musical Fidelity archives
Issue certificate signed by Antony Michaelson
Soak test for 48 hours
Retail price £599
In the UK we will pay freight to your house.
Overseas clients; all freight charges in both directions, customs clearance charges and duties at your cost.
Nu-Vista Preamp upgrade schedule
Upgrade all audio path electrolytics to low ESR, high temp. type
Replace decoupling caps with polycarbonate/polyester type
Upgrade op amps to professional spec type
Replace PSU caps with low ESR, high temp. type
Update to latest software
Service selector switch and volume control
Replace bypass caps from ceramic to polycarbonate/polyester
Replace regulators with selected precision types
Replace 4 Nu-Vista tubes with precision matched pairs
Heater current, audio characteristics and transconductance matched
Replace output transistors with matched pair
Log in owner name, model and serial number in Musical Fidelity archives
Issue certificate signed by Antony Michaelson
Soak test for 48 hours
Retail price £599
In the UK we will pay freight to your house.
Overseas clients; all freight charges in both directions, customs clearance charges and duties at your cost.
X-P100 Preamp upgrade schedule
Replace bypass caps from ceramic to polycarbonate/polyester
Service selector switch and volume control
Upgrade op amps to professional spec type
Upgrade all audio path electrolytics to low ESR, high temp. type
Update to latest software
Replace PSU caps with low ESR, high temp. type
Replace output transistors with matched pair and realign output stage
Replace regulators with selected precision types
Replace decoupling caps with polycarbonate/polyester type
Log in owner name, model and serial number in Musical Fidelity archives
Issue certificate signed by Antony Michaelson
Soak test for 48 hours
Retail price £499
In the UK we will pay freight to your house.
Overseas clients; all freight charges in both directions, customs clearance charges and duties at your cost.
X-PreV3 upgrade schedule
Replace bypass caps from ceramic to polycarbonate/polyester
Replace PSU caps with low ESR, high temp. types
Update to latest software
Replace output transistors with matched pair and realign output stage
Upgrade op amps to professional spec type
Replace decoupling caps with polycarbonate/polyester type
Upgrade all audio path electrolytics to low ESR, high temp. type
Replace regulators with selected precision types
Service selector switch and volume control
Log in owner name, model and serial number in Musical Fidelity archives
Issue certificate signed by Antony Michaelson
Soak test for 48 hours
Retail price £399 inc VAT.
In the UK we will pay freight to your house.
Overseas clients; all freight charges in both directions, customs clearance charges and duties at your cost.