Measures: 8.9 x 6.6 x 2.2 cm
Weight without battery: 115 gr.
Supply voltage: 6 .. (9) .. 15 Volts DC
Mean current uptake: 28 mA
Discrete volume control. Typical stepsize 1.5 dB, 31 steps.
Maximal amplification: -2 / 14 dB (low/high gain)
Input impedance: 120 kOhm / 19 kOhm
Output impedance: < 1 Ohm
The unit runs from a single 9V battery, 5V USB-power, or an external regulated powersupply (upto 15V). Internally the supply voltage is doubled to increase driving capacity.
Noise is removed by LC-filtering of the supply voltage.
Total buffer capacity is 1700 uF to lower the effective battery impedance.
For amplification two single OPA209 opamps are used for maximal sonic performance.(No dual or quad-opamps!)
The USB-DAC is based on the Burr-Brown PCM2702.
Resolution USB: 16 bit
Sampling frequencies USB: 32, 44, 48 kHz
The 3.5 mm sockets are silver-plated.
Inside the signal path only metal-resistors and high-quality film-capacitors are used (polypropylene).
The enclosure is made entirely of aluminium.
Accessories:..2 mini-mini interconnects (goldplated)
.......................Tool to open the amp