S.M.S.L SP400 Power for all your headphones

S.M.S.L SP400
Power for all your headphones

With 12W at 16Ω and 6W at 32Ω, the SP400 can power nearly everything. And if you need a little extra oomph, just toggle the three-position gain for an extra three to six decibels.

Audio part:
Input method: balanced x1, unbalanced x1
Output mode: balanced earphone X1, unbalanced earphone X1, pre-balanced output X1

Output Power:
Balanced headphones:
12Wx 2 16Ω
6Wx2 32Ω
880mW x2 300Ω
440mW x2 600Ω

Unbalanced headphones:
6Wx2 16Ω
3Wx2 32Ω
440mW x2 300Ω
220mW x2 600Ω

Signal to noise ratio: 133dB, A-Weighted
Residual noise: 1.9uV, A-Weighted
THD+N: -123dB, 0.00007% 1kHz, 32Ω
THD+N: -117dB, 0.00013% 20-20kHz, 32Ω, -3dB
THD: -125dB, 0.00006%
Input impedance: 47kΩ
Output impedance: close to 0Ω
Frequency response: 0.1Hz-500kHz -3dB