The Schiit Mjolnir 2 headphone amplifier, a fully balanced hybrid tube amplifier that was once Schiit's flagship headphone amp. The Mjolnir 2 uses the Schiit's balanced and differential Crossfet topology. Schiit says that this amp is the only circlotron-style topology in a headphone amplifier on the market. It has balanced in and balanced out and a custom 4-gang RK27 Alps volume pot keeping the signals separate all the way through. The amp has excellent macrodynamics (aka slam) and a very pleasant, slightly warmish but detailed top end. Tons of power for any headphone.

The unit is in good/very good condition. There is a small ding on the right corner (pictured). Stock tubes are included, just not pictured.

Frequency Response: 20Hz-20Khz, -0.1db, 2Hz-400KHz, -3dB
Maximum Power, 32 ohms: 8.0W RMS per channel
Maximum Power, 50 ohms: 5.0W RMS per channel
Maximum Power, 300 ohms: 850mW RMS per channel
Maximum Power, 600 ohms: 425mW RMS per channel
THD: <0.005%, 20Hz-20KHz, at 1V RMS
IMD: <0.006%, CCIR
SNR: >104db, unweighted, referenced to 1V RMS, in low gain
mode
Crosstalk: >-75dB, 20 Hz-20KHz
Output Impedance: 1 ohms (high gain), 0.3 ohms (low gain)
Gain: 8 (18dB) or 1 (0db), via front-panel switch
Inputs: one pair balanced XLR, one pair single-ended RCAs,
switchable via front panel switch
Outputs: one 4-pin balanced female XLR, one ¼” TRS phono, one
pair 3-pin male XLR preamp, one pair single-ended RCA
Power Consumption: 45W
Size: 16 x 8.75 x 2.25”
Weight: 13 lbs

Includes:​

Schiit Mjolnir 2 amp
Vacuum tubes
18 gauge power cord