|
While the Beresford TC-7520 is primarily used a DAC (digital to analog converter), special care has been taken to ensure that it also serves as an excellent headphone amplifier.
Photo Courtesy of Bart Nowak - Beresford Distributor in Poland
According to Stanley Beresford:
The headphone amplifier is a completely new design and can hold its own against standalone headphone amplifiers costing several times the price of the TC-7520. Extensive research has allowed us to design a headphone amp that does not produce that boomy mid-head sound of conventional headphone amplifiers.
Neither does it produce the lack of bass and signal cancellation side effects of a cross-feed headphone amplifier.
What the TC-7520 headphone amplifier does do is produce one of the best sound stage with outstanding detail and excellent headphone load handling ability. Its almost binaural response sounds far more natural and involved than a cross-feed design.
Amplifier Design
The TC-7520 headphone output is driven by a high-end headphone amplifier. It is designed to drive loads between 24 to 600 Ohms. The headphone amplifier includes a current limiting circuit that fully protects against damage from short circuit conditions.
Gain Range
Because of the variations in headphone sensitivity, the TC-7520 features a variable gain range for the headphone outputs. In order to avoid internal jumpers to reduce the gain, the Volume Control 0dB level has been calibrated as follows:
|
Headphone Impedance |
|
Volume Control 0dB level |
|
32 Ohm |
|
12 o'clock |
|
64 Ohm |
|
2 o'clock |
|
300 Ohm |
|
4 o'clock |
|
600 Ohm |
|
5 o'clock |
|
