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PS AUDIO - BHK SIGNATURE PREAMPLIFIER
$8,599.00
Product Details
Preamplifiers are at the heart of any high-performance music system. They are the critical controlling interface between our sources of music and our loudspeaker chain. Most preamplifiers do a fine job of control and isolation, but only a rare handful make magic happen. Add the BHK Signature Preamplifier into your system and suddenly you are enveloped in a wealth of musicality you’ve not yet experienced: deeper, wider, sound staging, improved separation of instruments and voices, subterranean bass, extended highs, and an openness you’re unlikely to have experienced without this instrument in the system.
DESIGN
The BHK Signature Preamplifier features two 12AU7 dual triode vacuum tubes in the input stage that act as a zero feedback balanced input amplification pair. A combination of an input stepped attenuator, built around the highest quality passive components for coarse volume adjustments, coupled with controlling the actual gain of the vacuum tube for finer steps, turned out to be the most sonically transparent level control we have yet heard. Finally, the output stage is a high-bias class A MOSFET design that is unaffected by cable and power amplifier interface challenges.
APPLICATION
Preamplifiers play a critical role in any separates audio system, strategically positioned between sources of music: CD players, phono preamps, DACs, tape recorders and tuners—and your power amplifier—the preamp serves essential roles of control and isolation. The BHK Signature Preamplifier features 5 identical balanced and single ended inputs, and converts all input signals into a balanced signal for the lowest possible distortion, and can be used in a two-channel audio system or as part of a home theater system. The high-bias Class A MOSFET output stage ensures unmatched performance with any cable and amplifier interface.
Specifications
Physical |
|
| Unit Weight | 22 lbs [9.97 kg] |
| Unit Dimensions | 17” x 14” x 4” [ 36cm x 43cm x 10cm] |
| Shipping Weight | 31 lbs [14 kg] |
| Shipping Dimensions | 20.5”x 24” x 10” [52cm x 61cm x 25cm] |
Power requirements |
|
| Input Power | Model specific 100VAC, 120VAC, or 230VAC 50 or 60Hz |
| Power Consumption | 60W |
Audio inputs |
|
| Coaxial RCA single ended XLR Balanced |
5 5 |
| Input Impedance Unbalanced (RCA) Balanced (XLR) |
33KΩ minimum 66KΩ minimum |
| Sensitivity | Unbalanced 1.3V/33KΩ Balanced 1.3V/66KΩ |
Audio Outputs |
|
| Coaxial RCA single ended XLR Balanced |
2 2 |
Analog Audio Output |
|
| Output level | 4.0 Vrms |
| Output Impedance | <100Ω |
| Frequency Response 20-20KHz |
+/- 0.1dB |
| THD&IM @ 1KHz (full scale) | <0.03% |
| Bandwidth | -3dB 0.1Hz – 200kHz |
DC Triggers |
|
| +12V | 2 |
Headphone Performance |
|
| Output Power 300Ω 16Ω > |
>200mW 4.0 Watts |
| S/N Ratio | >90dB (1KHz) |
| THD & IM 1 volt out | <0.02% |
| Output Impedance | <0.5Ω |
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