2099 EUR / In stock.
Distinguished visually from the MicroZOTL2 by its silver screws and white power LED, the MZ2-S was designed in response to customer feedback and discussions about the amp. We wanted a “pre-rolled” tube amplifier that arrived with NOS tubes selected to match well with the circuit, so that the many people interested in tube rolling and old-stock tubes could get that experience without having to go through the uncertain and involved process of choosing and sourcing their own.
We’ve altered the circuit of the amp to take 12SN7 output tubes instead of the more common, and more sought after, 6SN7. Doing this made it feasible to provide a full NOS complement at minimal price increase, and every MZ2-S comes with a pair of RCA 12SN7 and a pair of 6201 tubes, a military-spec version of the 12AT7 that owners of the MicroZOTL2 have favored. Developing the MZ2-S also led us to look at our linear power supply again, and we’ve significantly upgraded the regulator. The MZ2-S is our offering for a € 2000, end-game headphone amp, preamp, or low-power stereo amp that doesn’t ask for any upgrades.
Amplifier class: Push-pull Class A, no feedback
Sensitivity: 0.6V RMS [full output]
Output impedance: (measured @ 0.5A, 60 Hz) 2 ohms
Input impedance: 50k
Power Supply Input: Manually switchable 120V(+/- 10%) / 220V(+/- 10%) 50-60hz operation
Power Supply Output: 12VDC 2.5 amps
Hum and noise: minimum 60mV RMS or 90dB below full output (20Hz-20kHz)
Power consumption from ac power source: 33W
Power output: with 4-ohm load: 1W, 1% THD, with 14-ohm load: 0.5W, 1% THD
Channel separation: (4-ohm loads) 46dB, 100Hz-10kHz, (14-ohm loads): 54 dB, 100Hz-10kHz
Frequency response full power: (4-ohm load) +0, -1dB 10Hz-20kHz, (14-ohm load): +0, -1dB 5Hz-50kHz,
Voltage gain: (4-ohm load): 10.3dB, (14-ohm load): 12.4dB
Size: Amplifier: 9 1/2 inches (24.1 cm)wide, 4 3/4 inches (12.0 cm) tall, 7 7/8 inches (19.7 cm) deep (including connectors); External PSU: 12" (30.48 cm) x 3.25" (8.26 cm) x 4.25" (10.8 cm)
Net weight: 8.94 lbs (4.1 kg) - amplifier and external power supply)
Finish: Aluminum case and faceplate w/ lexan top
Tube complement per channel: NOS 6201/12AT7 input, NOS 12SN7 output