Earmen CH-Amp
Earmen CH-Amp
Desktop Fully Balanced Headphone Amp/Preamp
- External low noise linear power supply
- Composite amplifier topology
- Output power up to 3.8W
- Fully balanced architecture
- Gain control
- Ultra low THD and SNR
- Aluminum chassis
- Remote controler
Earmen, a step further...
After the successful launch of small portable devices at the market, EarMen has taken it a step further and prepared specially designed line of devices for you, that will give you real and unique pleasure in listening to music. EarMen designed a desktop fully balanced headphone amplifier with excellent features and a linear power supply unit.
Composite Amplifier Topology
A Composite Amplifier Topology is implemented in the CH-Amp. Composite op-amp brings the best of both worlds with excellent DC and AC characteristics. These amplifiers offer several advantages over other types of amplifiers.
Power amplifiers typically use thermal feedback loops, thus causing serious errors while driving heavy loads. These errors occur due to self-heating. The use of the composite can remove such errors and improves the performance of the circuitry. The composite amplifiers also offer better DC output-offset. The excess of the load placed on the output transistors does not affect offset voltage.
Specification
Line 1 | RCA Single End Input | Input Sensitivity = 2V |
Line 2 | RCA Single End Input | Input Sensitivity = 2V |
Line 3 | Balanced 4.4 mm | Input Sensitivity = 4V |
Headphone Outputs
SE 6.35mm | output impedance = <1 Ω |
Balanced 4.4mm | output impedance = <1 Ω |
Pre Outputs
RCA (SE output) | output impedance = 100Ω |
Balanced 4.4mm | output impedance = 200Ω |
Single-ended output
SE Input | BAL Input | |
Output Level | 7Vrms | 11Vrms |
Max Power | 1,5 W | 3,8 W |
THD+N | 0.0008% | 0.0005% |
SNR | >116dB | >118dB |
Freq. Response | ±0.005dB | ±0.005dB |
SE Input | BAL Input | |
Output Level | 7Vrms | 11Vrms |
Max Power | 1,5 W | 3,8 W |
THD+N | 0.0008% | 0.0007% |
SNR | >118dB | >119dB |
Freq. Response | ±0.005dB | ±0.005dB |
Line
Balanced output | Single-end Output | |
Output Level | 8V | 4V |
Output Impedance | 200Ω | 100Ω |
Gain
High | Low | |
SE 6.35mm | 7V (1.5W / 32Ω) | 2.9V (260mW / 32Ω) |
Balanced 4.4mm | 11V (3.8W / 32Ω) | 5.5 V (1W / 32Ω) |
Dimension
LxHxW | 150x30x150 mm / 5,9"x1,18"x5,9" |
Weight | 550 gr / 1,21lbs |
PSU Dimension LxHxW | 150x60x150 mm / 5,9"x2,36"x5,9" |
PSU Weight | 1590 gr / 3,52 lbs |
