Musical Fidelity

Bypass PSU electrolytics with polycarbonate/polyester type
Pure copper noise nulling screen fitted to PSU caps
Measure 12 output transistors for precision matching
Adjust for minimum output DC offset
Bypass all audio path electrolytics with high grade polypropylene
Replace internal L/S cables with LC/OFC low resistance type
Realign power transformer
Check regulators for noise and voltage accuracy, replace if needed
Pure copper noise nulling belly band screen fitted to mains transformer
Check and recalibrate input control circuitry
Upload latest software specification
Check PSU caps ESR, replace if needed
Check and recalibrate high level input
Precision re-bias
Refurbish sockets, check for wear, replace if needed
Replace bypass caps from ceramic to polycarbonate/polyester type
Check and recalibrate line level input
Customise output resistance for fine tuned matching
Check channel balance exceeds original specification
Replace PSU and supply bypass caps with high grade polypropylene
Pure copper noise nulling screen fitted to motorized volume control
Soak test over 10 days
Computer recalibration to confirm that unit exceeds original specification
Log 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

750K monobloc/supercharger power amp upgrade schedule

Check and recalibrate line level input
Measure 20 output transistors for precision matching
Bypass all audio path electrolytics with high grade polypropylene
Check channel balance exceeds original specification
Check regulators for noise and voltage accuracy, replace if needed
Precision re-bias
Check and recalibrate input control circuitry
Pure copper noise nulling screen fitted to PSU caps
Check PSU caps ESR, replace if needed
Realign power transformer
Refurbish sockets, check for wear, replace if needed
Replace bypass caps from ceramic to polycarbonate/polyester type
Customise output resistance for fine tuned matching
Replace PSU and supply bypass caps with high grade polypropylene
Bypass PSU electrolytics with polycarbonate/polyester type
Upload latest software specification
Replace internal L/S cables with LC/OFC low resistance type
Pure copper noise nulling belly band screen fitted to mains transformer
Check and align balanced performance
Pure copper noise nulling screen fitted to motorized volume control
Check and recalibrate high level input
Adjust for minimum output DC offset
Soak test over 10 days
Computer recalibration to confirm that unit exceeds original specification
Log owner name, model and serial number in Musical Fidelity archives
Issue certificate signed by Antony Michaelson

Cost; £699 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 dual mono Power Amp upgrade schedule

Adjust for minimum output DC offset
Bypass all audio path electrolytics with high grade polypropylene
Bypass PSU electrolytics with polycarbonate/polyester type
Check channel balance exceeds original specification
Check PSU caps ESR, replace if needed
Customise output chokes for fine tuned matching
Measure 12 output transistors for precision matching
Precision re-bias
Pure copper noise nulling belly band screen fitted to mains transformer
Pure copper noise nulling screen fitted to PSU caps
Realign power transformer
Refurbish sockets, check for wear, replace if needed
Replace bypass caps from ceramic to polycarbonate/polyester type
Replace internal L/S cables with LC/OFC low resistance type
Replace PSU and supply bypass caps with high grade polypropylene
Reset choke regulation alignment
Soak test over 10 days
Computer recalibration to confirm that unit exceeds original specification
Log 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 Power Amp upgrade schedule

Reset choke regulation alignment
Replace internal L/S cables with LC/OFC low resistance type
Adjust for minimum output DC offset
Pure copper noise nulling screen fitted to PSU caps
Customise output chokes for fine tuned matching
Check PSU caps ESR, replace if needed
Bypass all audio path electrolytics with high grade polypropylene
Bypass PSU electrolytics with polycarbonate/polyester type
Check channel balance exceeds original specification
Measure 12 output transistors for precision matching
Precision re-bias
Pure copper noise nulling belly band screen fitted to mains transformer
Realign power transformer
Refurbish sockets, check for wear, replace if needed
Replace bypass caps from ceramic to polycarbonate/polyester type
Replace PSU and supply bypass caps with high grade polypropylene
Soak test over 10 days
Computer recalibration to confirm that unit exceeds original specification
Log 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 Power Amp upgrade schedule

Replace internal L/S cables with LC/OFC low resistance type
Measure 12 output transistors for precision matching
Pure copper noise nulling screen fitted to PSU caps
Replace PSU and supply bypass caps with high grade polypropylene
Reset overvoltage PSU
Check overvoltage winding
Check PSU caps ESR, replace if needed
Customise output chokes for fine tuned matching
Reset choke regulation alignment
Precision re-bias
Pure copper noise nulling belly band screen fitted to mains transformer
Realign power transformer
Refurbish sockets, check for wear, replace if needed
Replace bypass caps from ceramic to polycarbonate/polyester type
Adjust for minimum output DC offset
Bypass all audio path electrolytics with high grade polypropylene
Bypass PSU electrolytics with polycarbonate/polyester type
Check channel balance exceeds original specification
Soak test over 10 days
Computer recalibration to confirm that unit exceeds original specification
Log owner name, model and serial number in Musical Fidelity archives
Issue certificate signed by Antony Michaelson

Cost; £549 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

A370 Power Amp upgrade schedule

Precision re-bias
Check regulators for noise and voltage accuracy, replace if needed
Replace bypass caps from ceramic to polycarbonate/polyester type
Pure copper noise nulling screen fitted to PSU caps
Measure 20 output transistors for precision matching
Bypass all audio path electrolytics with high grade polypropylene
Check channel balance exceeds original specification
Upload latest software specification
Check and recalibrate input control circuitry
Bypass PSU electrolytics with polycarbonate/polyester type
Pure copper noise nulling belly band screen fitted to mains transformer
Replace internal L/S cables with LC/OFC low resistance type
Check PSU caps ESR, replace if needed
Realign power transformer
Check and recalibrate line level input
Refurbish sockets, check for wear, replace if needed
Pure copper noise nulling screen fitted to motorized volume control
Customise output resistance for fine tuned matching
Replace PSU and supply bypass caps with high grade polypropylene
Check and recalibrate high level input
Adjust for minimum output DC offset
Soak test over 10 days
Computer recalibration to confirm that unit exceeds original specification
Log 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

A5CR Power Amp upgrade schedule

Bypass PSU electrolytics with polycarbonate/polyester type
Pure copper noise nulling belly band screen fitted to mains transformer
Precision re-bias
Reset choke regulation alignment
Customise output chokes for fine tuned matching
Replace internal L/S cables with LC/OFC low resistance type
Pure copper noise nulling screen fitted to PSU caps
Adjust for minimum output DC offset
Replace PSU and supply bypass caps with high grade polypropylene
Bypass all audio path electrolytics with high grade polypropylene
Check PSU caps ESR, replace if needed
Refurbish sockets, check for wear, replace if needed
Check channel balance exceeds original specification
Measure 16 output transistors for precision matching
Realign power transformer
Replace bypass caps from ceramic to polycarbonate/polyester type
Soak test over 10 days
Computer recalibration to confirm that unit exceeds original specification
Log owner name, model and serial number in Musical Fidelity archives
Issue certificate signed by Antony Michaelson

Cost; £549 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

F15 Power Amp upgrade schedule

Realign power transformer
Refurbish sockets, check for wear, replace if needed
Check PSU caps ESR, replace if needed
Check regulators for noise and voltage accuracy, replace if needed
Customise output resistance for fine tuned matching
Fit premium grade gold plated operational amp sockets
Heater current, audio characteristics and transconductance matched
Measure 16 output transistors for precision matching
Bypass PSU electrolytics with polycarbonate/polyester type
Precision re-bias
Replace bypass caps from ceramic to polycarbonate/polyester type
Pure copper noise nulling belly band screen fitted to mains transformer
Pure copper noise nulling screen fitted to PSU caps
Adjust for minimum output DC offset
Bypass all audio path electrolytics with high grade polypropylene
Replace operational amps with selected premium grade types
Check channel balance exceeds original specification
Replace 2 x ECC88 tubes with precision matched pairs
Replace internal L/S cables with LC/OFC low resistance type
Replace PSU and supply bypass caps with high grade polypropylene
Check and align balanced performance
Soak test over 10 days
Computer recalibration to confirm that unit exceeds original specification
Log owner name, model and serial number in Musical Fidelity archives
Issue certificate signed by Antony Michaelson

Cost; £799 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

F16 Power Amp upgrade schedule

Recalibrate Class A control circuit
Fit premium grade gold plated operational amp sockets
Check and align balanced performance
Check regulators for noise and voltage accuracy, replace if needed
Realign power transformer
Precision re-bias
Replace bypass caps from ceramic to polycarbonate/polyester type
Refurbish sockets, check for wear, replace if needed
Bypass PSU electrolytics with polycarbonate/polyester type
Check PSU caps ESR, replace if needed
Pure copper noise nulling screen fitted to PSU caps
Pure copper noise nulling belly band screen fitted to mains transformer
Customise output resistance for fine tuned matching
Replace PSU and supply bypass caps with high grade polypropylene
Adjust for minimum output DC offset
Replace internal L/S cables with LC/OFC low resistance type
Replace 2 x ECC88 tubes with precision matched pairs
Bypass all audio path electrolytics with high grade polypropylene
Replace operational amps with selected premium grade types
Heater current, audio characteristics and transconductance matched
Measure 16 output transistors for precision matching
Check channel balance exceeds original specification
Soak test over 10 days
Computer recalibration to confirm that unit exceeds original specification
Log owner name, model and serial number in Musical Fidelity archives
Issue certificate signed by Antony Michaelson

Cost; £849 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

F18 Power Amp upgrade schedule

Check and align balanced performance
Heater current, audio characteristics and transconductance matched
Measure 16 output transistors for precision matching
Realign power transformer
Precision re-bias
Refurbish sockets, check for wear, replace if needed
Replace bypass caps from ceramic to polycarbonate/polyester type
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
Customise output resistance for fine tuned matching
Fit premium grade gold plated operational amp sockets
Replace PSU and supply bypass caps with high grade polypropylene
Bypass PSU electrolytics with polycarbonate/polyester type
Pure copper noise nulling belly band screen fitted to mains transformer
Replace internal L/S cables with LC/OFC low resistance type
Adjust for minimum output DC offset
Replace 2 x ECC88 tubes with precision matched pairs
Bypass all audio path electrolytics with high grade polypropylene
Replace operational amps with selected premium grade types
Check channel balance exceeds original specification
Soak test over 10 days
Computer recalibration to confirm that unit exceeds original specification
Log 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

F19 Power Amp upgrade schedule

Recalibrate Class A control circuit
Replace operational amps with selected premium grade types
Replace internal L/S cables with LC/OFC low resistance type
Adjust for minimum output DC offset
Fit premium grade gold plated operational amp sockets
Check regulators for noise and voltage accuracy, replace if needed
Check channel balance exceeds original specification
Bypass all audio path electrolytics with high grade polypropylene
Bypass PSU electrolytics with polycarbonate/polyester type
Pure copper noise nulling belly band screen fitted to mains transformer
Refurbish sockets, check for wear, replace if needed
Check PSU caps ESR, replace if needed
Realign power transformer
Customise output resistance for fine tuned matching
Replace bypass caps from ceramic to polycarbonate/polyester type
Heater current, audio characteristics and transconductance matched
Measure 24 output transistors for precision matching
Precision re-bias
Check and align balanced performance
Pure copper noise nulling screen fitted to PSU caps
Replace 2 x ECC88 tubes with precision matched pairs
Replace PSU and supply bypass caps with high grade polypropylene
Soak test over 10 days
Computer recalibration to confirm that unit exceeds original specification
Log owner name, model and serial number in Musical Fidelity archives
Issue certificate signed by Antony Michaelson

Cost; £999 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

kW750 Power Amp upgrade schedule

Check PSU caps ESR, replace if needed
Bypass all audio path electrolytics with high grade polypropylene
Check channel balance exceeds original specification
Bypass PSU electrolytics with polycarbonate/polyester type
Adjust for minimum output DC offset
Check regulators for noise and voltage accuracy, replace if needed
Precision re-bias
Fit premium grade gold plated operational amp sockets
Customise output chokes for fine tuned matching
Measure 40 output transistors for precision matching
Refurbish sockets, check for wear, replace if needed
Refurbish connector leads and plugs
Pure copper noise nulling screen fitted to PSU caps
Realign power transformer
Pure copper noise nulling belly band screen fitted to mains transformer
Replace bypass caps from ceramic to polycarbonate/polyester type
Upload latest software specification
Replace PSU and supply bypass caps with high grade polypropylene
Replace internal L/S cables with LC/OFC low resistance type
Replace operational amps with selected premium grade types
Soak test over 10 days
Computer recalibration to confirm that unit exceeds original specification
Log owner name, model and serial number in Musical Fidelity archives
Issue certificate signed by Antony Michaelson

Cost; £999 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

M250 power amp upgrade schedule

Replace operational amps with selected premium grade types
Bypass all audio path electrolytics with high grade polypropylene
Bypass PSU electrolytics with polycarbonate/polyester type
Check channel balance exceeds original specification
Replace bypass caps from ceramic to polycarbonate/polyester type
Precision re-bias
Check PSU caps ESR, replace if needed
Replace internal L/S cables with LC/OFC low resistance type
Check regulators for noise and voltage accuracy, replace if needed
Measure 6 output transistors for precision matching
Replace PSU and supply bypass caps with high grade polypropylene
Realign power transformer
Check and recalibrate input control circuitry
Adjust for minimum output DC offset
Pure copper noise nulling screen fitted to PSU caps
Upload latest software specification
Customise output chokes for fine tuned matching
Pure copper noise nulling belly band screen fitted to mains transformer
Refurbish sockets, check for wear, replace if needed
Pure copper noise nulling screen fitted to motorized volume control
Soak test over 10 days
Computer recalibration to confirm that unit exceeds original specification
Log 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

Nu-Vista 300 Power Amp upgrade schedule

Upload latest software specification
Replace PSU and supply bypass caps with high grade polypropylene
Replace bypass caps from ceramic to polycarbonate/polyester type
Refurbish sockets, check for wear, replace if needed
Pure copper noise nulling screen fitted to PSU caps
Precision re-bias
Customise output chokes for fine tuned matching
Bypass all audio path electrolytics with high grade polypropylene
Check PSU caps ESR, replace if needed
Adjust for minimum output DC offset
Bypass PSU electrolytics with polycarbonate/polyester type
Check channel balance exceeds original specification
Check regulators for noise and voltage accuracy, replace if needed
Fit premium grade gold plated operational amp sockets
Heater current, audio characteristics and transconductance matched
Measure 20 output transistors for precision matching
Pure copper noise nulling belly band screen fitted to mains transformer
Pure copper noise nulling screen fitted to motorized volume control
Realign power transformer
Refurbish connector leads and plugs
Replace 4 Nu-Vistor tubes with precision matched pairs
Replace internal L/S cables with LC/OFC low resistance type
Reset choke regulation alignment
Soak test over 10 days
Computer recalibration to confirm that unit exceeds original specification
Log owner name, model and serial number in Musical Fidelity archives
Issue certificate signed by Antony Michaelson

Cost; £999 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

P270 Power Amp upgrade schedule

Check regulators for noise and voltage accuracy, replace if needed
Replace turn on delay circuit mains buffer resistor
Pure copper noise nulling screen fitted to motorized volume control
Customise output resistance for fine tuned matching
Measure 12 output transistors for precision matching
Check and recalibrate line level input
Replace internal L/S cables with LC/OFC low resistance type
Check PSU caps ESR, replace if needed
Bypass all audio path electrolytics with high grade polypropylene
Bypass PSU electrolytics with polycarbonate/polyester type
Check and recalibrate input control circuitry
Replace PSU and supply bypass caps with high grade polypropylene
Precision re-bias
Pure copper noise nulling belly band screen fitted to mains transformer
Computer recalibration to confirm that unit exceeds original specification
Adjust for minimum output DC offset
Check and recalibrate high level input
Pure copper noise nulling screen fitted to PSU caps
Realign power transformer
Refurbish sockets, check for wear, replace if needed
Replace bypass caps from ceramic to polycarbonate/polyester type
Upload latest software specification
Soak test over 10 days
Check channel balance exceeds original specification
Log owner name, model and serial number in Musical Fidelity archives
Issue certificate signed by Antony Michaelson

Cost; £699 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

Typhoon power amp upgrade schedule

Pure copper noise nulling screen fitted to PSU caps
Check PSU caps ESR, replace if needed
Realign power transformer
Refurbish sockets, check for wear, replace if needed
Replace bypass caps from ceramic to polycarbonate/polyester type
Bypass PSU electrolytics with polycarbonate/polyester type
Customise output resistance for fine tuned matching
Measure 16 output transistors for precision matching
Precision re-bias
Check channel balance exceeds original specification
Adjust for minimum output DC offset
Check regulators for noise and voltage accuracy, replace if needed
Pure copper noise nulling belly band screen fitted to mains transformer
Replace PSU and supply bypass caps with high grade polypropylene
Bypass all audio path electrolytics with high grade polypropylene
Replace internal L/S cables with LC/OFC low resistance type
Pure copper noise nulling screen fitted to motorized volume control
Check and align balanced performance
Soak test over 10 days
Computer recalibration to confirm that unit exceeds original specification
Log owner name, model and serial number in Musical Fidelity archives
Issue certificate signed by Antony Michaelson

Cost; £439 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-A200 monobloc Power Amp upgrade schedule

Bypass all audio path electrolytics with high grade polypropylene
Pure copper noise nulling screen fitted to motorized volume control
Bypass PSU electrolytics with polycarbonate/polyester type
Check channel balance exceeds original specification
Check PSU caps ESR, replace if needed
Replace PSU and supply bypass caps with high grade polypropylene
Check regulators for noise and voltage accuracy, replace if needed
Replace internal L/S cables with LC/OFC low resistance type
Customise output chokes for fine tuned matching
Refurbish sockets, check for wear, replace if needed
Pure copper noise nulling screen fitted to PSU caps
Measure 12 output transistors for precision matching
Precision re-bias
Adjust for minimum output DC offset
Pure copper noise nulling belly band screen fitted to mains transformer
Realign power transformer
Replace bypass caps from ceramic to polycarbonate/polyester type
Soak test over 10 days
Computer recalibration to confirm that unit exceeds original specification
Log owner name, model and serial number in Musical Fidelity archives
Issue certificate signed by Antony Michaelson

Cost; £299 each 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-AS100 Power Amp upgrade schedule

Bypass PSU electrolytics with polycarbonate/polyester type
Adjust for minimum output DC offset
Customise output chokes for fine tuned matching
Precision re-bias
Realign power transformer
Bypass all audio path electrolytics with high grade polypropylene
Pure copper noise nulling screen fitted to PSU caps
Measure 8 output transistors for precision matching
Check channel balance exceeds original specification
Check PSU caps ESR, replace if needed
Check regulators for noise and voltage accuracy, replace if needed
Replace PSU and supply bypass caps with high grade polypropylene
Pure copper noise nulling belly band screen fitted to mains transformer
Replace internal L/S cables with LC/OFC low resistance type
Refurbish sockets, check for wear, replace if needed
Pure copper noise nulling screen fitted to motorized volume control
Replace bypass caps from ceramic to polycarbonate/polyester type
Soak test over 10 days
Computer recalibration to confirm that unit exceeds original specification
Log owner name, model and serial number in Musical Fidelity archives
Issue certificate signed by Antony Michaelson

Cost; £299 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