This is a preamplifier + headphone amplifier in one made by Lehmann Audio of Germany. The design was very well done by giving it a 4 stage gain that is adjustable by the switches beneath the machine. This makes the widens compatibility to high sensitivity to high impedance headphones even K1000 can have good performance when connected to it. Very simple and clean exterior (just like German would make them) that is not obtrusive.
When used as preamplifier, the sound is very transparent and quiet, neutral and projects a wide soundstage, the layering of the music is also very well presented. We were very pleasently suprise by how well it worked as a preamplifier.
Input impedance: 47 kohms
Maximum gain: 0dB, 10dB, 20dB – selectable via DIP
switches on the bottom side.
Also effective for USB-DAC (Linear USB)
Frequency response: 10 Hz (-0.3dB) to 35 kHz (-1dB)
S/N ratio: >95dB at 0dB gain (analogue)
THD: <0.001% at 6 mW/300 ohms (analogue)
Channel separation: >70dB/10kHz
Output power: 200 mW/300 ohms
400 mW/60 ohms
Output impedance: Line Out 50 ohms
Headphone Out 5 ohms
Power consumption: ca. 10 W, internal regulated power supply with anti-interference toroidal trans former.
Dimensions: 280 x 110 x 44 mm (housing only)
Audio connectors: Neutrik headphone sockets 6.35mm with gold-plated contacts 1x parallel to Line Out 1x Line Out muting.
Gold-plated RCA sockets with teflon insulation.
Weight: ca. 1.5 kg