The HQS 9001 is JMF Audio’s remarkable reference mono power amplifier, playing music with unrivaled density, articulation, subtlety and tonal accuracy, revealing the slightest nuances.
For further information, please refer to the main page > Power amplifiers
Input
- Impedance
20kΩ
- Output current capability
330A (600A peak)
Technical specifications:
XLR, metal case, gold contacts
- Connection
100dB typ., based on psychoacoustic criteria
- Interference rejection
Hand calibrated precision balanced input stage (impedance matched to PRS 1.5)
- Type
Level metering (-15dB to +3dB, deactivatable), Input offset, Overload, High temperature
Monitoring
34.6 dB (all models have the same voltage gain which eases multi-amplification)
Gain
Output
500W / 8Ω 900W / 4Ω 1400W / 2Ω
- Output power RMS
> 1Ω recommended (tested down to 1Ω at full output power at the manufacture)
- Load impedance
JMF Audio LSS dia. 6mm (120A continuous rated)
- Connection
Better than 0.1dB 3Hz..20kHz for 250W / 4Ω, small signals better than -1dB at 100kHz
Bandwidth
Better than 0.005% for 140W / 8Ω at 1kHz (0.001% typ. un-loaded) BW. 20Hz-20kHz
THD+N
Better than 110dB un-weighted BW. 20Hz-20kHz
Signal to noise ratio
Better than 3000 at 8Ω, wide-band
Damping factor
Direct coupling
Audio signal coupling
Automatic protection against high frequency large signals
Automatic protection against input offset voltage and subsonic (fc 3Hz)
Automatic protection against overheating
Automatic protection against overload and short circuits
Mains voltage supervision - advanced protection (protections activation reported on front panel)
Protection circuits
Passive cooling with additional temperature dependent air flow
Sealed case design (no air path inside amplifier, preventing from dust).
Cooling
100, 120, 220-240 V AC - 50/60Hz (according to country of destination)
AC mains power supply
Orose® up to 16mm thick anodized aluminum external enclosure including steel controls and rose-gold.
Enclosure
482 wide (front panel) x 605 deep x 186 high mm (19” wide x 24” deep x 7.3” high)
including feet and air flow unit (not represented on photo)
Dimensions (version G)
54 kg /pc (120 lbs /pc)
Net weight (version G)
Silver or Black anodizing
Finishes
Voltage values are RMS. Measures on 230V AC power supply after 100 hours of operation. Specifications are based on the manufactured products at date of writing and may change with product evolution. Measurements with Audio Precision APX 555 equipment.
For further information, please refer to the main page > Power amplifiers