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This compact yet potent power amp sports the latest iteration of QUAD’s famous Current Dumping topology, first introduced in the legendary QUAD 405 – one of the most lauded British audio components of all time and still the only amp design to have earned a Queen’s Award for Technological Achievement.
Current Dumping is essentially a method of marrying the superior sonic purity of Class A amplification with the greater efficiency of Class AB. An extremely high-quality, low-power Class A amplifier provides the signal quality, while a high-power current dumping section delivers the muscle to keep the speakers under control. These two amp circuits are combined via a precision network to perfectly impose the finesse of the Class A output onto the power of the current dumper. The result is a relatively compact and cool-running power amp capable of delivering a captivating combination of dynamic power, vice-like grip and sumptuous sonic detail.
The Artera Stereo’s power output is conservatively rated at 140W per channel into eight ohms and 250W into four ohms, ensuring any speakers – including QUAD’s classic ESL electrostatic designs – can be driven with ease. Connectivity options comprise single-ended RCA and balanced XLR inputs, a 12V trigger input and high-quality speaker binding posts. Simple, solid and classy on the outside and devilishly clever within, the Artera Stereo maintains QUAD’s traditional place at the forefront of modern amplifier design
Specifications
| Model | Artera Stereo |
| General Description | Power Amplifier |
| Rated Output Power | 140W 8 ohm (<1% THD,1kHz) |
| Total Harmonic Distortion | <0.003% (100W, 1kHz) |
| <0.03% (100W, 20Hz-20kHz) | |
| Frequency Response | -0.5dB (20Hz-20kHz, ref. 1kHz) |
| -3dB (20Hz-70kHz, ref. 1kHz) | |
| Input Sensitivity | 980mV(RCA line in) |
| Input Impedance | 10kohm (Balanced) |
| 15kohm (Unbalanced) | |
| Signal to Noise Ration(S/N) | 115dB (A weighted, ref. 140W) |
| Maximum Power Consumption | 750W |
| Inputs | 2 x XLR, RCA |
| Outputs | Speaker A+B |
| Standby Power Consumption | <0.5W |
| Dimensions (W x H x D) | 320 x 158 x 338mm |
| Weight | 15kg |