A rare opportunity to own a very lightly used pair of premium American Class A vacuum tube monoblock power amplifiers.
Output Power: 100W RMS per channel Circuit: Class A Ultra-Linear Power Tubes: 2 × KT150 per monoblock Driver Tubes: 2 × 6SN7 per monoblock Speaker Outputs: 4Ω / 8Ω Manufacture: Handcrafted in California, USA Condition: Very Lightly Used Exhibition Pair
Special Price: €9,000 for the pair.
Contact Chameleon Audio for detailed photographs, equipment matching and international shipping arrangements.
100 Watts of Class A Tube Power per Channel. Handcrafted in California, USA.
The Canary Audio M120 Monoblock Amplifiers represent an exceptional combination of high-power vacuum tube engineering, traditional American craftsmanship and dedicated high-end stereo amplification.
Designed around matched KT150 output tubes and Canary Audio’s custom-built transformers, the M120 delivers a rated 100 watts RMS per monoblock in a Class A ultra-linear circuit.
This particular stereo pair is offered by Chameleon Audio as a very lightly used exhibition model, providing an opportunity to acquire a distinguished pair of American tube amplifiers at a significantly reduced price.
Special Exhibition Price: €9,000 for the pair.
Important: Exhibition Model Condition
This is an exhibition pair, not a brand-new product.
The amplifiers have been very lightly used for exhibition purposes and are offered as a specific pre-owned stereo pair.
Customers should contact Chameleon Audio for up-to-date photographs of the actual units, confirmation of cosmetic and operational condition, the installed tube complement, accessories, packaging and applicable warranty.
The sale includes two monoblock amplifiers, providing separate amplification for the left and right stereo channels.
The Powerful Canary: High-End Monoblock Amplification
The Canary Audio M120 was designed to bring together the musical qualities associated with vacuum tube amplification and the power required for a wide range of high-performance loudspeakers.
Each monoblock is a dedicated power amplifier serving one audio channel, with its own output stage, transformers and amplification circuitry.
The manufacturer specifies 100 watts RMS from each amplifier.
When used together as a stereo pair, the two M120 monoblocks provide 100 watts per channel, not 200 watts into a single channel.
This architecture allows the left and right signals to be amplified in physically separate chassis.
Class A Ultra-Linear Tube Circuit
The M120 is described by Canary Audio as a Class A ultra-linear monoblock power amplifier.
Its design combines vacuum tube output devices with an ultra-linear output-stage arrangement.
Ultra-linear operation uses a specific output-transformer connection to influence the electrical behaviour of the power tubes.
The engineering objective is to achieve a considered balance between power delivery, distortion and the sonic characteristics of the tube output stage.
Canary Audio developed the M120 around this architecture to provide substantial output power while retaining the character of its valve amplification designs.
Two Matched KT150 Tubes per Monoblock
At the heart of each M120 are two matched KT150 power output tubes.
The KT150 is a high-power beam tetrode developed for demanding audio amplifier applications.
In the M120, the output tubes operate together with the custom-designed power supply and output transformer system.
The complete stereo pair uses four KT150 output tubes in the manufacturer’s standard configuration.
Properly matched and correctly operating tubes are important for performance and reliability.
The exact tube brands, matching status and operating hours of this exhibition pair should be confirmed before purchase.
6SN7 Driver Tubes
In addition to the KT150 output tubes, each M120 uses two 6SN7 vacuum tubes in its signal amplification and driver circuitry.
The 6SN7 is a well-established dual-triode tube used in numerous high-end audio designs.
The original M120 tube complement therefore comprises:
2 × KT150 output tubes per monoblock
2 × 6SN7 tubes per monoblock
4 × KT150 and 4 × 6SN7 across the stereo pair
The actual installed tubes should be verified for this specific pair.
Custom-Built Power and Output Transformers
A defining feature of the M120 is the use of large, custom-built power and output transformers designed for the amplifier by Canary Audio’s engineers.
The power transformer supplies the electrical energy required by the valve circuitry.
The output transformer provides the coupling between the tube output stage and the loudspeaker load.
Transformer design is particularly important in high-power valve amplifiers because it influences bandwidth, power transfer and load matching.
Canary Audio’s M120 is engineered around these substantial magnetic components rather than treating them as secondary parts.
100 Watts RMS from Each Amplifier
The M120 delivers a manufacturer-rated 100W RMS per monoblock.
This level of output power gives the amplifiers greater flexibility for loudspeaker matching than many lower-powered valve designs.
The M120 can be considered for suitable floorstanding and standmount loudspeakers, including models that benefit from substantial amplifier power.
Nevertheless, wattage alone does not guarantee compatibility with every difficult loudspeaker load.
The speaker’s impedance curve, phase behaviour, sensitivity and room requirements must also be considered.
4-Ohm and 8-Ohm Loudspeaker Connections
The Canary Audio M120 provides output connections specified for 4Ω and 8Ω loudspeaker loads.
These connections allow the amplifier to be matched to suitable loudspeakers using the appropriate transformer output.
Correct speaker connection is particularly important for vacuum tube amplifiers.
Always follow the manufacturer’s operating instructions and avoid running the amplifier without a suitable loudspeaker load unless the manufacturer explicitly permits it.
Extended Frequency Response
The manufacturer specifies a frequency response of 10Hz to 110kHz, ±1dB.
This wide stated bandwidth reflects the design objectives of the output circuitry and transformers.
It should not be interpreted as a guarantee of equivalent loudspeaker or in-room frequency response.
Final audible performance depends on the complete playback system.
High Input Impedance
The M120 has a published input impedance of 120kΩ.
This relatively high input impedance can make the amplifier suitable for use with a variety of compatible line-level preamplifiers.
The specified input sensitivity is 0.5V for full output.
These characteristics should be considered when selecting a preamplifier, especially in systems where noise, gain structure and volume-control range are important.
Choosing a Preamplifier
As dedicated monoblock power amplifiers, the M120 units are intended to receive an appropriately controlled line-level signal from a preamplifier or suitable source with variable analogue output.
They are not integrated amplifiers and do not replace the source-selection and volume-control functions of a traditional preamplifier.
For enthusiasts who appreciate a complete vacuum tube system, the Canary Audio range at Chameleon Audio includes dedicated preamplifiers and other valve amplification products.
Compatibility should be confirmed according to output voltage, impedance, gain and connection type.
Separate Chassis for the Stereo Channels
Monoblock amplification uses a separate power amplifier for each channel.
This approach offers physical separation between left and right amplification circuits and can provide practical flexibility when arranging a dedicated audio system.
In some installations, the amplifiers can be positioned close to their respective loudspeakers, subject to ventilation and cable-management requirements.
Each M120 remains a substantial component, so strong and stable equipment supports are essential.
Handcrafted in California, USA
Canary Audio manufactures its amplifiers in California, combining traditional assembly methods with specialist vacuum tube engineering.
The M120 reflects this approach through its substantial transformer construction, point-to-point design philosophy and carefully selected components.
The manufacturer’s emphasis is on producing dedicated audio components for demanding enthusiasts rather than mass-market electronics.
This American manufacturing heritage is an important part of the M120’s identity.
Substantial Mechanical Construction
Each monoblock weighs approximately 50lb (22.7kg).
In metric measurements, this corresponds approximately to 31.8 × 50.8 × 21.0cm (W × D × H).
The amplifiers require appropriate shelf space and sufficient open ventilation around the output valves.
Because the M120 operates in Class A with vacuum tubes, considerable heat can be generated during operation.
Do not enclose the amplifiers in a poorly ventilated cabinet or place objects directly above the tubes.
Performance and Musical Presentation
The M120 was developed for enthusiasts who want the presentation of high-quality tube electronics without necessarily accepting the lower output power associated with some traditional valve amplifier designs.
Its substantial transformers, high-power KT150 tubes and ultra-linear circuit form the technical foundation of the amplifier.
The intended result is a combination of musical expression, dynamic headroom and strong performance with appropriately matched loudspeakers.
The exact sonic character will depend on the associated preamplifier, source components, loudspeakers, room acoustics and installed valves.
System Matching and Listening Advice
Chameleon Audio can assist with selecting a suitable preamplifier and loudspeakers for the Canary Audio M120.
Particular attention should be given to the nominal and minimum loudspeaker impedance, amplifier output connection and desired listening levels.
The M120 may be partnered with a range of high-end loudspeakers, but compatibility should be assessed for the individual system rather than inferred from output power alone.
Explore Canary Audio at Chameleon Audio
Discover additional American vacuum tube electronics in the Canary Audio collection, including dedicated power amplifiers and preamplifiers.
Customers interested in other exhibition and second-hand high-end components can also visit our Second Hand & Ex-Demo Deals.
Video Demonstrations and Listening Experience
√
Experience Canary Audio with Chameleon Audio
Explore the world of high-end vacuum tube amplification through this video presentation, selected by Chameleon Audio.
Discover the atmosphere of a dedicated high-fidelity listening system and enjoy a closer introduction to the equipment and its musical presentation.
Video demonstrations provide an introduction to the listening experience. Actual sound quality depends on the recording equipment and playback system.
The Chameleon Audio product page also features videos of AudioSolutions Virtuoso loudspeakers used with Canary Audio electronics.
These videos offer a useful introduction to the character of complete systems built around Canary amplification.
The precise components used in each recording should be checked before interpreting either video as a dedicated M120 demonstration.
As with all online listening demonstrations, the sound heard depends on the original recording and the customer’s playback equipment.
Key Features
Pair of Canary Audio M120 monoblock tube power amplifiers
Very lightly used exhibition models
100 watts RMS per monoblock
100W per stereo channel when used as a pair
Class A ultra-linear amplifier design
Two matched KT150 output tubes per monoblock
Two 6SN7 tubes per monoblock
Custom-designed power transformers
Custom-designed output transformers
4Ω and 8Ω loudspeaker output connections
10Hz–110kHz frequency response, ±1dB
120kΩ input impedance
0.5V input sensitivity for rated output
Substantial 22.7kg chassis per amplifier
Handcrafted in California, USA
Special exhibition price of €9,000 for the pair
Technical Specifications
Manufacturer
Canary Audio
Model
M120
Amplifier Type
Vacuum Tube Monoblock Power Amplifier
Operating Class
Class A Ultra-Linear
Rated Power Output
100W RMS per monoblock
Stereo Pair Output
2 × 100W RMS
Input Sensitivity
0.5V for full output
Input Impedance
120,000Ω
Frequency Response
10Hz–110kHz, ±1dB
Total Harmonic Distortion
Less than 0.4%
Signal-to-Noise Ratio
-95dB below 1W, manufacturer specification
Damping Factor
16
Power Consumption
300W per monoblock
Speaker Outputs
4Ω / 8Ω
Output Tubes
2 × KT150 per monoblock
Driver Tubes
2 × 6SN7 per monoblock
Tube Complement for Pair
4 × KT150 + 4 × 6SN7
Dimensions per Unit
12.5 × 20 × 8.25 inches (W × D × H)
Metric Dimensions
Approximately 318 × 508 × 210mm (W × D × H)
Net Weight per Unit
50lb / approximately 22.7kg
Manufacturing Location
California, USA
Condition
Very Lightly Used Exhibition Pair
Quantity
2 Monoblock Amplifiers
Price
€9,000 for the pair
Specifications are based on the Canary Audio M120 manufacturer information. Exact fitted valves, accessories, cosmetic condition and warranty of this exhibition pair should be confirmed with Chameleon Audio. Manufacturer specifications are subject to change.
The €9,000 price applies to a stereo pair comprising two Canary Audio M120 monoblock power amplifiers.
Are these amplifiers brand new?
No. They are very lightly used exhibition models, not factory-new units.
How much power does each M120 deliver?
Each monoblock is rated at 100W RMS. Used as a stereo pair, they provide 100W per channel.
What type of amplification does the M120 use?
The manufacturer describes the M120 as a Class A ultra-linear vacuum tube monoblock amplifier.
Which tubes does the M120 use?
The standard configuration uses two KT150 and two 6SN7 tubes in each monoblock.
Are the M120 amplifiers suitable for 4Ω loudspeakers?
They provide designated 4Ω and 8Ω outputs. Final matching should consider the loudspeaker’s complete electrical characteristics.
Do I need a separate preamplifier?
Yes. The M120 is a power amplifier, so a suitable preamplifier or compatible variable-output source is required for source selection and volume control.
How much does each amplifier weigh?
Approximately 22.7kg per monoblock.
Are the M120 amplifiers made in the United States?
Yes. Canary Audio states that its M120 amplifiers are handcrafted in California.
Do they generate heat?
Yes. They are Class A vacuum tube amplifiers and require proper ventilation during operation.
Do they include a warranty?
Please contact Chameleon Audio for the specific warranty terms applicable to this exhibition pair. The manufacturer’s standard warranty should not be assumed to apply in full.
Can the amplifiers be shipped internationally?
International shipping can be discussed with Chameleon Audio. Transport arrangements, packaging, cost and insurance depend on the destination.
Why Choose the Canary Audio M120?
The Canary Audio M120 Monoblock Amplifiers offer the appeal of dedicated Class A vacuum tube amplification with substantially more rated output power than many traditional low-wattage valve designs.
With their matched KT150 power tubes, custom-designed transformers, heavy-duty construction and American craftsmanship, they represent a serious option for enthusiasts building a high-end stereo music system.
This very lightly used exhibition pair is offered at €9,000, providing an attractive alternative to purchasing the equivalent model at its former full asking price.
American Tube Craftsmanship. 100 Watts per Channel. Exceptional Exhibition Opportunity.
Availability and Worldwide Enquiries
This Canary Audio M120 exhibition pair is offered by Chameleon Audio in Greece, subject to prior sale.
Contact us for photographs of the exact units, current availability, tube and accessory details, preamplifier and speaker matching, and international shipping quotations.
