- An amplifier remains the beating heart of any high-performance audio system, but in 2018 a truly versatile integrated amp needs to cover many bases – digital and analogue sources, wireless connectivity for portable devices, a phono stage to cater for vinyl playback, amplification for headphones as well as speakers… That’s a lot to pack in, whilst keeping performance high and the price tag affordable – and yet, that’s exactly what the 6000A delivers
- Outwardly, the 6000A bears strong resemblance to the 8300A with its rotary controls and large, central OLED display. Unlike its costlier, analogue-only sibling, it incorporates high-quality D/A conversion, enabling digital sources to be connected directly without an external DAC. It supplies four digital inputs, three line-level analogue inputs, an input for a turntable, wireless connectivity via Bluetooth and a dedicated headphone amp, in addition to its ability when driving loudspeakers
- Much effort has been made to ensure the 6000A’s digital circuitry delivers the level of quality one might expect of a high-performance standalone DAC. As ever, Audiolab has turned to the ES9018 Sabre32 Reference chip family to perform D/A conversion, utilising ESS Technology’s 32-bit HyperStream architecture and Time Domain Jitter Eliminator to deliver ultra-low noise and high dynamic range
- The 6000A’s discrete Class AB power amp stage delivers 50W per channel into eight ohms, with a maximum current delivery of 9 Amps into difficult loads. The output stage of the discrete power amp circuits uses a CFB (Complementary Feedback) topology, ensuring superior linearity and excellent thermal stability, as the idle current is kept independent of the temperature of the output transistors
- In recognition of the recent vinyl revival, Audiolab has included a phono stage for moving magnet phono cartridges – a high-quality, low-noise, JFET-based circuit with precise RIAA equalisation. Similarly, an increasing number of people are using headphones for music listening, so Audiolab has incorporated a dedicated headphone amp with current-feedback circuitry
Gain (max.) +8dB (Line) +55dB (Phono MM) Input Sensitivity 720mV (Line, Volume = 0dB) 3.1mV (Phono MM, Volume=0dB) Input Impedance 10K (Line) 47K//100pF (Phono MM) Total Harmonic Distortion (THD) < 0.0004% (Line, 1KHz @ 2V, Volume = 0dB) Frequency Response 20Hz-20kHz (+/-0.1dB) Output Voltage 2.3V max. (Volume = 0dB) Output Impedance 120 ohm Signal-to-Noise Ration (S/N) > 110dB (Line, A-weighted) >76dB (Phono MM, A-weighted) DAC D to A converter ES9018K2M Total Harmonic Distortion (THD) < 0.0006% (1KHz @ 0dBFS) Output level (0dBFS, 1KHz) 2.05V Max. Sampling Frequency 192KHz Signal-to-noise ratio (S/N) > 112dB (A-weighted) Digital Filters Fast Roll-off , Slow Roll-off , Minimum Phase Power Amplifier Section Gain +29dB Rated Max. Power Output 2 X 50W (8 ohm, THD<1%) 2 X 75W (4 ohm, THD<1%) Frequency Response 20Hz-20kHz (+/-0.3dB) Input Sensitivity 720mV Total Harmonic Distortion (THD) <0.003% (1kHz @ 40W/8ohm) Signal-to-Noise ratio (S/N) > 110dB (A-weighted) Max. Output Current 9A Headphone Amplifier Total Harmonic Distortion (THD) < 0.01% (1kHz, 50mW) Output Impedance 2.35 ohm Load impedance 20-600 ohm General Standby Power Consumption <0.5W Power Requirements 115V ~ 50 - 60Hz 100V ~ 50 - 60Hz Dimensions (mm) (W x H x D) 445 x 65.5 x 300 Carton Size (mm) (W x H x D) 512 x 467 x 146 Weight 7.8kg (Net).