| Audiobot Notes | |
|---|---|
| Peak SPL |
113.6 dB This was approximated from the source output at 50 Ω |
| Damping factor | 10.7 and 42.9 |
| Popular Combos for HD 660 S |
|---|
| Schiit Magni 3 |
| Popular Combos for Valhalla 2 |
|---|
| Shure SRH1540 |
| Sennheiser HD 660 S | |
|---|---|
| Impedance | 150 Ω |
| Efficiency | 95.8 dB SPL/mW |
| Frequency Response | 10 - 41,000 Hz |
| Transducer Type | Dynamic |
| Operating Principle | Open |
| Ear Coupling | Over-ear |
| Weight | 260 g |
| Price History | |
|---|---|
| Current | $489.99 |
| Highest | $700.00 |
| Lowest | $489.99 |
| Search Item | Amazon, eBay |
| Buy from Sennheiser | |
| Similar Headphones |
|---|
| Sennheiser HD 700 |
| AKG K 702 |
| AKG K 712 Pro |
| AKG K 7XX |
| AKG K 612 Pro |
| Schiit Valhalla 2 | |
|---|---|
| Type | Tube |
| Output Impedance |
3.5 Ω 14.0 Ω |
| Power Output |
450 mW at 600 Ω 800 mW at 300 Ω 180 mW at 50 Ω |
| Frequency Range | 20 - 20,000 Hz |
| Portable | |
| Additional Notes | |
| "Triode OTL headphone amp and preamp" | |
| Price History | |
|---|---|
| Current | $389.00 |
| Highest | $389.00 |
| Lowest | — |
| Search Item | Amazon, eBay |
| Buy from Schiit | |
