The Quicksilver M-135 monoblock amplifier is a powerhouse option for audiophiles who want a serious dose of tube-driven magic in their stereo system. These amplifiers, rated at 135 watts, is designed to give you that classic tube warmth with enough muscle to drive even the most demanding speakers. With its pure, all-tube design and hand-wired circuitry, the M-135 delivers a sound that is rich, textured, and incredibly dynamic, letting the music flow with a natural, effortless quality.
The build quality is another major highlight. These are hand-wired amplifiers, emphasizing durability and ease of maintenance — a hallmark of Quicksilver’s design philosophy. While they look like a throwback to another era, their performance keeps up with modern expectations, easily driving even demanding speaker setups with grace.
- Production
- 1992-2000
- Condition
- 9/10
- Serial No.
- 192
- Orig. MSRP
- $4250
- Restoration
- Replaced shorted EL34 tube
- Replaced burned 1 ohm 5 watt resistor
- Replaced feedback caps
- Adjusted bias
- Verified power output at 137 watts RMS into 8 ohms @0.57% THD+N
- Factory Specs
Power Output = 135 watts into 4 or 8 ohms from 20Hz to 20 KHz
Power Bandwidth = 10 Hz to 100 KHz
Input Sensitivity = 1.33 volts
Power Supply Energy Storage = 575 joules
Dimensions - Chassis = 13“ deep x 17” wide x 8” high - Front panel =19" wide x 8 3/4" high, Rack handles 2" deep
Finish - Chassis = Textured black - Front panel =Silver anodize, Rack handles black
Weight = 70 lbs each
Tube Complement = 1 - 12FQ7 / 1 - 12AU7 / 6 - EL34
- The History of Quicksilver Audio
- Quicksilver Audio entered the high-end audio market in 1981 when we began selling the MS190 Stereo Amplifier. Mike Sanders, the founder and owner of Quicksilver Audio, has been an avid audiophile since his early teen years. He went on to earn his Electrical Engineering baccalaureate degree from the University of the Pa...
[ Read More ]
- Liner Notes
- Thank you for purchasing the Quicksilver Audio M135 Mono Amplifiers. These amplifiers have been engineered to have a very wide bandwidth, extremely low distortion and superior dynamic range. The output transformer used in this amplifier is based on the best designs of the past but uses superior new materials to achieve a very high level of performance. The high frequency characteristics of this transformer are so stable that many different output tubes may be used without the need for circuit changes or compensation adjustments. The front end circuitry used in this amplifier was developed by Quicksilver and is unique to the audio industry. It is D.C. coupled for low frequency stability, and nulls out any change in power supply voltages, negating the need for regulated power supplies and their inherent sonic problems. This is an all tube design and uses no circuit boards or transistors.
- Packing
- Prepare to be impressed. We have arguably the best packing process around. We use our InstaPak machine and white open cell foam to build a custom enclosure for your piece that ensures that it's stable and secure. If it is particularly fragile or heavy, we typically opt for private courier delivery. Depending on where you are in the country, that may cost a bit extra. We also take great care to protect the tubes. When sensible, we will pack the tubes to prevent any movement. Other times, we'll individually wrap the tubes and mark their corresponding socket to preserve the bias. You can be confident that your piece will be snug as a bug in a rug.
- Packing
- We'll deliver this piece in its original factory box, so you can be sure it will be protected just as Quicksilver Audio intended.
- Shipping
- This piece ships to the contiguous United States for a flat rate of $200, which includes our packaging and our insurance. Of course, we'll ship anywhere in the world, just drop us a line and we'll give you an estimate – even if you're just curious.
- Stock No.
- 8829865427165
The Quicksilver M-135 monoblock amplifier is a powerhouse option for audiophiles who want a serious dose of tube-driven magic in their stereo system. These amplifiers, rated at 135 watts, is designed to give you that classic tube warmth with enough muscle to drive even the most demanding speakers. With its pure, all-tube design and hand-wired circuitry, the M-135 delivers a sound that is rich, textured, and incredibly dynamic, letting the music flow with a natural, effortless quality.
The build quality is another major highlight. These are hand-wired amplifiers, emphasizing durability and ease of maintenance — a hallmark of Quicksilver’s design philosophy. While they look like a throwback to another era, their performance keeps up with modern expectations, easily driving even demanding speaker setups with grace.
Production
1992-2000
Condition
9/10
Serial No.
192
Orig. MSRP
$4250
Restoration
- Replaced shorted EL34 tube
- Replaced burned 1 ohm 5 watt resistor
- Replaced feedback caps
- Adjusted bias
- Verified power output at 137 watts RMS into 8 ohms @0.57% THD+N
Factory Specs
Power Output = 135 watts into 4 or 8 ohms from 20Hz to 20 KHz
Power Bandwidth = 10 Hz to 100 KHz
Input Sensitivity = 1.33 volts
Power Supply Energy Storage = 575 joules
Dimensions - Chassis = 13“ deep x 17” wide x 8” high - Front panel =19" wide x 8 3/4" high, Rack handles 2" deep
Finish - Chassis = Textured black - Front panel =Silver anodize, Rack handles black
Weight = 70 lbs each
Tube Complement = 1 - 12FQ7 / 1 - 12AU7 / 6 - EL34
The History of Quicksilver Audio
Quicksilver Audio entered the high-end audio market in 1981 when we began selling the MS190 Stereo Amplifier. Mike Sanders, the founder and owner of Quicksilver Audio, has been an avid audiophile since his early teen years. He went on to earn his Electrical Engineering baccalaureate degree from the University of the Pa...
[ Read More ]
Liner Notes
Thank you for purchasing the Quicksilver Audio M135 Mono Amplifiers. These amplifiers have been engineered to have a very wide bandwidth, extremely low distortion and superior dynamic range. The output transformer used in this amplifier is based on the best designs of the past but uses superior new materials to achieve a very high level of performance. The high frequency characteristics of this transformer are so stable that many different output tubes may be used without the need for circuit changes or compensation adjustments. The front end circuitry used in this amplifier was developed by Quicksilver and is unique to the audio industry. It is D.C. coupled for low frequency stability, and nulls out any change in power supply voltages, negating the need for regulated power supplies and their inherent sonic problems. This is an all tube design and uses no circuit boards or transistors.
Packing
Prepare to be impressed. We have arguably the best packing process around. We use our InstaPak machine and white open cell foam to build a custom enclosure for your piece that ensures that it's stable and secure. If it is particularly fragile or heavy, we typically opt for private courier delivery. Depending on where you are in the country, that may cost a bit extra. We also take great care to protect the tubes. When sensible, we will pack the tubes to prevent any movement. Other times, we'll individually wrap the tubes and mark their corresponding socket to preserve the bias. You can be confident that your piece will be snug as a bug in a rug.
Packing
We'll deliver this piece in its original factory box, so you can be sure it will be protected just as Quicksilver Audio intended.
Shipping
This piece ships to the contiguous United States for a flat rate of $200, which includes our packaging and our insurance. Of course, we'll ship anywhere in the world, just drop us a line and we'll give you an estimate – even if you're just curious.
Stock No.
8829865427165
