M60 MkII.2

About the M60 MkII.2

The Atma-Sphere M-60 Mk II.2 is a high-end, pure Class A, output transformerless (OTL) monoblock tube amplifier delivering 60 watts per channel into 8 ohms. It features a patented Balanced Differential Design® that is fully balanced from input to output, accepting both RCA and XLR inputs. The amplifier uses eight 6AS7G output tubes and four 6SN7 driver tubes per channel, totaling 16 output and 8 driver tubes for the stereo pair. It operates with a single gain stage for supreme clarity and employs no or very low negative feedback (factory settable to 2dB). The M-60 Mk II.2 is known for its exceptional transparency, speed, and wide bandwidth (2Hz to 75kHz within ½ dB), with a frequency response of 1Hz to 200kHz within 3 dB. It is stable into any load and designed for long tube life with automatic bias and easy bias/DC offset adjustments via front panel controls and built-in meter. The amplifier is housed in a classic open chassis with a wrinkled textured finish and weighs about 30 lbs per chassis. It is scalable by removing output tubes to adjust power output and uses readily available, inexpensive tubes. The M-60 Mk II.2 is It has received numerous accolades for performance and reliability, with a three-year general warranty and one year on output tubes. The design is highly regarded for its ability to drive challenging speaker loads, especially with higher impedance or efficient speakers, and is noted for its low distortion and excellent dynamic performance.