Musical Fidelity

Check and align balanced performance
Check regulators for noise and voltage accuracy, replace if needed
Replace PSU and supply bypass caps with high grade polypropylene
Bypass all audio path electrolytics with high grade polypropylene
Refurbish connector leads and plugs
Replace operational amps with selected premium grade types
Check channel balance exceeds original specification
Bypass PSU electrolytics with polycarbonate/polyester type
Realign power transformer
Fit premium grade gold plated operational amp sockets
Replace decoupling caps with polycarbonate/polyester type
Check PSU caps ESR, replace if needed
Upload latest software specification
Adjust for minimum output DC offset
Pure copper noise nulling belly band screen fitted to mains transformer
Replace bypass caps from ceramic to polycarbonate/polyester
Soak test over 10 days
Computer recalibration to confirm that unit exceeds original specification
Log in owner name, model and serial number in Musical Fidelity archives
Issue certificate signed by Antony Michaelson

Cost; £899 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.

E & OE

A3CR Preamp upgrade schedule

Bypass all audio path electrolytics with high grade polypropylene
Pure copper noise nulling screen fitted to motorized volume control
Check channel balance exceeds original specification
Replace PSU and supply bypass caps with high grade polypropylene
Pure copper noise nulling screen fitted to PSU caps
Refurbish sockets, check for wear, replace if needed
Service volume control
Bypass PSU electrolytics with polycarbonate/polyester type
Adjust for minimum output DC offset
Realign volume control
Fit premium grade gold plated operational amp sockets
Realign power transformer
Check PSU caps ESR, replace if needed
Replace decoupling caps with polycarbonate/polyester type
Reset choke regulation alignment
Replace operational amps with selected premium grade types
Check regulators for noise and voltage accuracy, replace if needed
Upload latest software specification
Pure copper noise nulling belly band screen fitted to mains transformers
Computer recalibration to confirm that unit exceeds original specification
Soak test over 10 days
Log in owner name, model and serial number in Musical Fidelity archives
Issue certificate signed by Antony Michaelson

Cost; £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.

E & OE

A3.2CR Preamp upgrade schedule

Adjust for minimum output DC offset
Pure copper noise nulling screen fitted to PSU caps
Refurbish sockets, check for wear, replace if needed
Reset choke regulation alignment
Bypass PSU electrolytics with polycarbonate/polyester type
Realign volume control
Replace PSU and supply bypass caps with high grade polypropylene
Service volume control
Fit premium grade gold plated operational amp sockets
Replace operational amps with selected premium grade types
Bypass all audio path electrolytics with high grade polypropylene
Pure copper noise nulling screen fitted to motorized volume control
Check channel balance exceeds original specification
Realign power transformer
Check PSU caps ESR, replace if needed
Replace decoupling caps with polycarbonate/polyester type
Check regulators for noise and voltage accuracy, replace if needed
Upload latest software specification
Pure copper noise nulling belly band screen fitted to mains transformers
Computer recalibration to confirm that unit exceeds original specification
Soak test over 10 days
Log in owner name, model and serial number in Musical Fidelity archives
Issue certificate signed by Antony Michaelson

Cost; £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.

E & OE

A308CR Preamp upgrade schedule

Service volume control
Bypass all audio path electrolytics with high grade polypropylene
Replace operational amps with selected premium grade types
Fit premium grade gold plated operational amp sockets
Check channel balance exceeds original specification
Pure copper noise nulling screen fitted to motorized volume control
Adjust minimum output DC offset
Replace decoupling caps with polycarbonate/polyester type
Check PSU caps ESR, replace if needed
Realign power transformer
Reset choke regulation alignment
Pure copper noise nulling belly band screen fitted to mains transformer
Check regulators for noise and voltage accuracy, replace if needed
Realign volume control
Pure copper noise nulling screen fitted to PSU caps
Bypass PSU electrolytics with polycarbonate/polyester type
Refurbish sockets, check for wear, replace if needed
Replace PSU and supply bypass caps with high grade polypropylene
Upload latest software specification
Soak test over 10 days
Computer recalibration to confirm that unit exceeds original specification
Log in owner name, model and serial number in Musical Fidelity archives
Issue certificate signed by Antony Michaelson

Cost; £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.

E & OE

A5CR Preamp upgrade schedule

Upload latest software specification
Pure copper noise nulling belly band screen fitted to mains transformers
Bypass all audio path electrolytics with high grade polypropylene
Pure copper noise nulling screen fitted to motorized volume control
Check channel balance exceeds original specification
Service volume control
Bypass PSU electrolytics with polycarbonate/polyester type
Adjust for minimum output DC offset
Realign volume control
Fit premium grade gold plated operational amp sockets
Realign power transformer
Refurbish sockets, check for wear, replace if needed
Check PSU caps ESR, replace if needed
Replace decoupling caps with polycarbonate/polyester type
Reset choke regulation alignment
Replace PSU and supply bypass caps with high grade polypropylene
Pure copper noise nulling screen fitted to PSU caps
Replace operational amps with selected premium grade types
Check regulators for noise and voltage accuracy, replace if needed
Computer recalibration to confirm that unit exceeds original specification
Soak test over 10 days
Log in owner name, model and serial number in Musical Fidelity archives
Issue certificate signed by Antony Michaelson

Cost; £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.

E & OE

kW Line Preamp upgrade schedule

Fit premium grade gold plated operational amp sockets
Refurbish sockets, check for wear, replace if needed
Replace PSU and supply bypass caps with high grade polypropylene
Reset choke regulation alignment
Measure 4 output power transistors for precision matching
Adjust for minimum output DC offset
Bypass PSU electrolytics with polycarbonate/polyester type
Pure copper noise nulling screen fitted to motorized volume control
Check PSU caps ESR, replace if needed
Realign volume control
Precision re-bias
Realign power transformer
Check channel balance exceeds original specification
Pure copper noise nulling belly band screen fitted to mains transformer
Replace decoupling caps with polycarbonate/polyester type
Check regulators for noise and voltage accuracy, replace if needed
Upload latest software specification
Pure copper noise nulling screen fitted to PSU caps
Replace bypass caps from ceramic to polycarbonate/polyester
Bypass all audio path electrolytics with high grade polypropylene
Replace tubes with precision matched pairs
Heater current, audio characteristics and transconductance matched
Soak test over 10 days
Computer recalibration to confirm that unit exceeds original specification
Log in owner name, model and serial number in Musical Fidelity archives
Issue certificate signed by Antony Michaelson

Cost; £599 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.

E & OE

Nu-Vista Preamp upgrade schedule

Refurbish sockets, check for wear, replace if needed
Bypass all audio path electrolytics with high grade polypropylene
Pure copper noise nulling screen fitted to motorized volume control
Adjust for minimum output DC offset
Realign power transformer
Replace PSU and supply bypass caps with high grade polypropylene
Upload latest software specification
Fit premium grade gold plated operational amps sockets
Check channel balance exceeds original specification
Refurbish connector leads and plugs
Pure copper noise nulling screen fitted to PSU caps
Service selector switch and volume control
Realign volume control
Check PSU caps ESR, replace if needed
Replace operational amps with selected premium grade types
Pure copper noise nulling belly band screen fitted to mains transformer
Check regulators for noise and voltage accuracy, replace if needed
Replace 4 Nu-Vista tubes with precision matched pairs
Heater current, audio characteristics and transconductance matched
Soak test over 10 days
Computer recalibration to confirm that unit exceeds original specification
Log in owner name, model and serial number in Musical Fidelity archives
Issue certificate signed by Antony Michaelson

Cost; £599 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.

E & OE

X-P100 Preamp upgrade schedule

Adjust for minimum output DC offset
Fit premium grade gold plated operational amp sockets
Replace PSU and supply bypass caps with high grade polypropylene
Refurbish sockets, check for wear, replace if needed
Upload latest software specification
Bypass PSU electrolytics with polycarbonate/polyester type
Realign volume control
Refurbish connector leads and plugs
Pure copper noise nulling screen fitted to PSU caps
Replace bypass caps from ceramic to polycarbonate/polyester
Check regulators for noise and voltage accuracy, replace if needed
Replace decoupling caps with polycarbonate/polyester type
Check channel balance exceeds original specification
Pure copper noise nulling belly band screen fitted to mains transformer
Bypass all audio path electrolytics with high grade polypropylene
Realign power transformer
Pure copper noise nulling screen fitted to motorized volume control
Service selector switch and volume control
Soak test over 10 days
Computer recalibration to confirm that unit exceeds original specification
Log in owner name, model and serial number in Musical Fidelity archives
Issue certificate signed by Antony Michaelson

Cost; £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.

E & OE

X-PreV3 upgrade schedule

Fit premium grade gold plated operational amp sockets
Refurbish sockets, check for wear, replace if needed
Adjust for minimum output DC offset
Replace bypass caps from ceramic to polycarbonate/polyester
Replace PSU and supply bypass caps with high grade polypropylene
Upload latest software specification
Bypass PSU electrolytics with polycarbonate/polyester type
Realign volume control
Replace operational amps with selected premium grade types
Check PSU caps ESR, replace if needed
Pure copper noise nulling screen fitted to PSU caps
Check regulators for noise and voltage accuracy, replace if needed
Replace decoupling caps with polycarbonate/polyester type
Check channel balance exceeds original specification
Pure copper noise nulling belly band screen fitted to mains transformer
Bypass all audio path electrolytics with high grade polypropylene
Realign power transformer
Pure copper noise nulling screen fitted to motorized volume control
Service volume control
Soak test over 10 days
Computer recalibration to confirm that unit exceeds original specification
Log in owner name, model and serial number in Musical Fidelity archives
Issue certificate signed by Antony Michaelson

Cost; £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.

E & OE