Aprašymas
A-70DA Audiophile Pure Audio Full Amplifier/Converter with 2×90 Watt, High-Class Phono Stage and asynchronous USB Digital Input
Class and a great deal of mass
The A-70DA, which weighs more than 17 kilos, is not just about mass, it is above all about class: Separate mains transformers for pre-amplifier and amplifier sections, above all when they are individually cast and shielded as here, provide not only weight, but also working conditions with unsurpassed low interference for the audio circuitry. The doubled A-70DA is worth it because its pre-amplifier has a completely symmetrical layout. An individual, particularly low-loss loudspeaker volume control was even integrated for the symmetrical XLR input. Via its digital inputs the A-70DA is equipped for all modern music formats. In this respect, the very highest resolutions, such as Quad-DSD (11.2 MHz) and PCM with 384 kHz and 32 bit, are supported via USB. The high-resolution counterparts in the analog world are exclusive MC pick-ups which, thanks to the a switchable phono stage, supply this top model just as precisely as the widespread MM systems. With its doubled chassis, the full-metal loudspeaker knob and the thick aluminium front and side panels, the casing guarantees a suitably high-class performance.
AUDIO FEATURES
90 W + 90 W (20 Hz-20 kHz, THD 0.5 %, 4 ohms)
65 W + 65 W (20 Hz-20 kHz, THD 0.5 %, 8 ohms)
THD: 0.02 % (Rated Output -3 dB, 8 ohms, 1 kHz)
Guaranteed Speaker Impedance: 4-16 ohms (A or B), 8-32 ohms (A+B), 4-16 ohms (Bi-Wiring)
Frequency Response (Measured with DIRECT button switched on): SACD/CD, NETWORK, LINE1, LINE2 5 Hz-50 kHz, ±3 dB
RIAA Deviation: PHONO MM 20 Hz-20 kHz, ±0.5 dB, PHONO MC 20 Hz-20 kHz, ±0.5 dB
Signal-to-Noise Ratio (IHF, A Network, Short Circuited)
SACD/CD: 101 dB
Phono: 89 dB (MM: 5 mV input)/74 dB (MC: 0.5 mV input)
Power Amp Direct: 110 dB
Channel Separation
SACD/CD: 90 dB (100 Hz), 84 dB (1 kHz), 75 dB (10 kHz)
Power Amp Direct: 95 dB (100 Hz), 95 dB (1 kHz), 80 dB (10 kHz)
Pure Audio Grade High Efficiency Power ›› MOSFET Amplifier (Class D Amplifier)
Fully-Balanced Preamplifier Circuitry
Separated Construction for Preamp and Power Amp
Source Direct Mode
Highly Acclaimed ESS SABRE32 Ultra DAC
384 kHz/32-bit USB-DAC for Asynchronous Transfer
Shielded Twin Transformer for Preamp and Power Amp
Trans-Stabilizer
Speaker A, B, A+B Selector
OPERATING FEATURES
Machine-Cut Aluminium Rotary Knob
Aluminium Front/Side Panels
Auto Power Down
High-Grade AC Power Cord
Rigid Under Base
Aluminium Hair Line Finish Remote Controller
CONNECTIONS
Exclusive Gold-Plated Speaker Terminals (Large Type)
Gold-Plated Analogue Audio Input (Phono MM/MC, Balanced, SACD/CD, LINE 1, LINE 2, NETWORK, USB, COAXIAL, POWER AMP DIRECT IN)
USB Input for Asynchronous Transmission
Digital Coaxial Input
Digital Optical Input
Audio Output (LINE 2, PHONES)
SR In/Out
AC Inlet (Large Type)
DIMENSIONS & WEIGHT
Dimensions (W x H x D): 435 x 141.5 x 361.5 mm
Weight: 17.2 kg
