PS Audio BHK 300 sig mono
Power Amplifier
Midland HiFi Studio - Key Information
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Overview & Features
Only a rare handful of power amplifiers withstand the test of time. The BHK Signature 300 is one such amplifier. Hand built, uncompromising.
The BHK Signature 300 Mono power amplifier culminates one man’s lifelong quest for perfection in power amplification. Bascom H. King’s magnum opus combines a pair of vacuum tubes on its input with a double set of parallel MOSFET outputs capable of 300 watts in 8Ω, 600 into 4Ω and more than 1,000 watts into 2Ω. The BHK Signature 300 amplifier can drive any loudspeaker to musical perfection and is the most important element in your music reproduction chain.
Features
Zero-loss parallel vacuum tube input stage
Fully paralleled inside (not like a traditional bridged approach)
Differentially coupled, paralleled, balanced MOSFET output stage
All through hole construction (no surface mount parts)
RCA Single ended input
XLR balanced input
300 watts 8Ω
600 watts 4Ω
1000 watts 2Ω
Less than 0.1% thd 20Hz to 20kHz at rated power
Damping factor 100 for excellent loudspeaker control
Front panel standby button for vacuum tube input
-3dB greater than 200kHz
Dual, custom, solid copper, gold plated output binding posts
Fully balanced from input to output
83 pounds
Input 12 volt trigger
Easy access for tubes
Technical Specification
Unit Weight
83 lbs [37.6 kg]
Unit Dimensions
17.1” x 8.7” x 14” Chassis only. 15" deep including connectors.
Shipping Weight
92 lbs [41.7 kg]
Shipping Dimensions
21”x 13” x 19”
Color Options
Black
Silver
Mains Power Inputs
IEC C14
Fuse Compliment all Countries
4 - 10 amp fast blow H-Rated 5x20mm Rail Fuses
230vac Countries
1 - 1 amp slow blow H-rated 5x20mm
1 - 5 amp slow blow H-rated 5x20mm
Accessories Included
UK (BS 1363) (230V version)
Audio Inputs
RCA (Unbalanced)
XLR (Balanced)
Speaker Outputs
Gold plated copper binding posts (2 pair)
Other
DC Trigger Input
3.5mm 5-15VDC
Warranty
3 years parts and labor on unit
1 year on vacuum tube
Power Consumption
@Ready - 75 Watts
@Idle - 175 Watts
@Rated power 8Ω - 850 Watts
@Rated power 4Ω - 1600 Watts
Signal
Gain
30.5dB +/-0.5dB
Sensitivity for rated output power of 250 watts into 8Ω
1.3V
Noise
100-20KHz <-85dBV
Input impedance
Unbalanced: 50KΩ
Balanced: 100KΩ
Output Impedance
50Hz, 2.8VRMS<0.1Ω
Frequency Response@2.8VRMS
10Hz – 20KHz +/- 0.1dB
10Hz – 200KHz +0.1/-3.0dB
THD&IM
1KHz, 1W/8Ω<0.01%
20-20KHz, 1W/8Ω<0.1%
1KHz, 200W/8Ω< 0.1% (120VAC Mains input)
1KHz, 400W/4Ω< 0.1% (120VAC Mains input)
Output Power (Both channels driven 120vac mains, 1kHz, 1% THD)
8Ω: 300W minimum
4Ω: 600W minimum
2Ω: 1000W
Damping factor: >350