AM1 (IEM Type) Amplifier Module for X7, X7II, Q5 & Q5S
| Model | AM1 | AM2 | AM3 | AM5 |
| Description | IEM Type | Medium-power | Balanced Type | High power |
| Battery Life | 9h | 8h | 6h | 6h |
| Internal Power Supply | ±3.3V | ±5.3/7.5V | ±5V | ±5.3/9V |
| Voltage Amplification Chip | OPA1612 | MUSES02 | OPA1622 | MUSES02 |
| Current Amplifier Chip | AD8397ARZ | BUF634U | OPA1622 | TPA6120A2 |
| Output Power (32Ω) | ＞100 mW | ＞300 mW | 540mW(2.5mm) / 190mW(3.5mm) | ＞500mW |
| THD+N (32Ω) | ＜0.0008% | ＜0.001% | ＜0.0008% | ＜0.001% |
| SNR (A-weighted) | ≥115 dB | ≥118 dB | ≥115 dB | ≥120 dB |
| Frequency Response (3dB) | 10 Hz~76kHz | 10 Hz~51kHz | 5 Hz~83kHz | 9 Hz~84kHz |
| Channel Separation (32Ω/1 kHz) | ＞73 dB | ＞72 dB | ＞110 dB | ＞72 dB |
All in all, we hereby provide the suggestions as follows:
- If you are a stacking enthusiast, there is no doubt that the Non-amped module AM0 is your choice.
- If you already have 2.5mm balanced headphones/earphones, then go for balanced type AM3.
- If your headphone is not balanced type while with high impedance, then high-power type AM5 should be your first choice.
- If you mainly use earbuds or portable headphones, you may choose the Medium-power type AM2.
- If you only use earbuds with much care to its heat dissipation and battery life, then you may choose the IEM type AM1.
