M60 vs M60 Mk.3.3
The M60 Mk.3.3 matches the M60 on power @ 8ω (60W), power @ 4ω (45W), thd (1.000%), and output impedance (4.1Ω).
AI-generated product photo — not official manufacturer imagery.
AmplifiersPower AmplifiersTube Amplifiers
Estimated price (community-sourced)
$7,000 - $8,200
Around — community and catalog average, updates slowly
About the M60
The Atma-Sphere M-60 is a high-end, fully differential, class A, OTL (Output Transformerless) monoblock amplifier. It is celebrated for its neutral and transparent sound, offering a unique combination of tube warmth and solid-state speed. The M-60 is handcrafted with premium components and features a fully balanced circuit, direct-coupled output, and automatic tube biasing for ease of use. It is available in several revisions, with the Mk. 3.3 being the latest as of 2025. The amplifier is highly customizable and has received numerous industry awards and accolades.
Specifications
Power Specifications
Amplification power output and characteristics
- Power @ 8Ω
- 60W @ 8Ω
- Power @ 4Ω
- 45W @ 4Ω
- Amplifier Class
- tube
- Minimum Impedance
- 4Ω
- Input Sensitivity
- 3.0V RMS
- Input Impedance
- 100Ω
Analog Output
Analog signal output specifications
- THD
- 1.000%
- Output Impedance
- 4.1Ω
Connectivity
Input and output connections
- Bluetooth
- No
- Wi-Fi
- No
- Ethernet
- No
- Analog Inputs
- RCA, XLR
Physical Dimensions
Size, weight, and appearance
- Dimensions
- 430 × 200 × 330 mm (W × H × D)
- Weight
- 13.6 kg (30 lbs)
Key Specifications
Power: 60W
Specifications are community-contributed and may not be accurate or complete. Verify all details with the manufacturer before making purchasing decisions. Terms & Conditions