M60 Mk.3.3 vs M60
The M60 matches the M60 Mk.3.3 on power @ 8ω (60W), power @ 4ω (45W), thd (1.000%), and output impedance (4.1Ω).
AI-generated product photo — not official manufacturer imagery.
M60 Mk.3.3
Atma-SphereAmplifiersPower Amplifiers
Estimated price (community-sourced)
$7,950
Around — community and catalog average, updates slowly
About the M60 Mk.3.3
The M-60 Mk.3.3 is a vacuum-tube monoblock power amplifier using Atma-Sphere’s balanced differential, Class-A2, direct-coupled output-transformerless (OTL) circuit. Each amplifier uses eight 6AS7G output tubes and four 6SN7 driver tubes, with automatic biasing and RCA single-ended and XLR balanced inputs. Its rated output is 60 watts into 8 ohms, with additional ratings of 45 watts into 4 ohms and 80 watts into 16 ohms. The listed specifications describe each monoblock; stereo systems use a pair.
Specifications
Power Specifications
Amplification power output and characteristics
- Power @ 8Ω
- 60W @ 8Ω
- Power @ 4Ω
- 45W @ 4Ω
- Amplifier Class
- A
- 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
- Analog Inputs
- RCA, XLR
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