Features
These amplifiers are showcases of our pursuit of perfection for those who seek more than just basic functions.
Features include:
- Harmonic distortion is less 0.01% at 200WRMS @4ohms (-1.5 dB from full output).
- Toroid transformer based design for ultra high power supply reliability.
- All OP amps on the signal paths are OPA2134 and TL072 for better sound quality (SQ) and richer bass sound.
- Hypex Ucd module(s) are used in the power amplifier section for a smooth and articulate sound.
- Three extension filter settings: Low-music (for music playback), Low-HT (for HT application) and High (for long play back time).
- Signal to noise ratio: better than 107 dB (A-weighted).
- Input impedance: 30k ohms.
- Air tight by design. No need for a back cover or separate chamber. It will give you an extra 0.1 cu ft enclosure net volume compared with those with back covers.
- Continuous phase adjustment (0-180) and low pass filter adjustment (50-200 Hz).
- Gold plated connectors.
- Brushed aluminum face plate.
- Build-in thermal and short circuit protection circuitry.
- The phase control is vastly improved so that it has better control in the non-HT setup.
- Subwoofer crossover adjustable range is increased to 50-200 Hz for more flexibility.
This amp also carries a 2yr warranty against defects (does not cover abuse or installation errors). All other features such as protection circuits are same as regular amps.
- Dimension: (W)195mm x (H) 260mm x (D)100mm.
- Cutout Dimension: (W) 167mm x (H) 233mm.
- 350W (700W) max input power for HX300 (HX580).
- Net weight: 7lbs (9lbs) for HX300 (HX580).
Quality components
The op amps used here are audiophile grade OPA2134 and TL072. OPA2134's are used in the high pass section (the one for front speakers filtering). On the subwoofer signal path, the op amps are mixtures of OPA2134 and TL072. The reason for us to use TL072 is for its richer bass sound. At half of full output rating, the distortion is less than 0.01%. In addition, similar to the A370 servo amps, there is no electrolytic capacitors on the signal and feedback paths.