Monolith by Monoprice Liquid Spark Headphone Amplifier

Dimensions: 4.6" x 3.7" x 1.5" (117 x 94 x 38 mm)
Weight: 9.6 oz. (271g)
Headphone Output: Unbalanced stereo 1/4" TRS jack
Preamp Output: Unbalanced stereo RCA jacks
Signal-to-Noise Ratio: 108dB (ref. 1 Vrms input / 2 Vrms output @ 1kHz)
Crosstalk: –73dB (ref. 1 Vrms input / 2 Vrms output @ 10kHz)
Output Impedance: < 0.1 ohms
Gain: +3dB or +6dB
Input: Unbalanced stereo RCA
Output Protection: Delay and offset protection