The tube-based headphone amplifier gives you the best results for a quality listening experience. Here’s what industry experts are saying about the Trends PA-10 Tube Headphone amp with different headphones:
| Specification | Sennheiser HD 580s | Koss PRO/4AAA | BeyerDynamic DT770 Pros | AKG K240 |
|---|---|---|---|---|
| Frequency response | 12–38,000 Hz | 10–25,000 Hz | 5–35,000 Hz | 15–25,000 Hz |
| Impedance | 300 ohms | 250 ohms | 250 ohms | 55 ohms |
| Sensitivity | 97 dB SPL | 98 dB SPL | 96 dB SPL | 91 dB SPL |
| Distortion | <0.1% Total | <0.1% Total | 0.1% Total | <0.1% Total |
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Specifications and comments reproduced from the supplied Trends Audio comparison.



