Integrated amplifier AA 1AI

Integrated amplifier AA 1AI

The AA 1AI is a very powerful compact integrated amplifier that provides up to 2x 125 W at 4 Ohm. It has three analog inputs (one is balanced XLR) and a headphone output. The phono input for the MM/MC head is available as an option.

The power amplifier is without crossover distortion even though it is not working in Class A. We are proud that, even though the 1x series is an entry level and affordable, it follows Audio Alto concept.

Highlights

The AA 1AI integrated amplifier has two unbalanced RCA inputs and two balanced XLR input.
The preamplifier uses a dual triode 6922. The triode can be turned on or off, allowing fans of the vacuum tube sound – electronic music reproduction with the sound signature of triode amplification.
The design of the power amplifier uses N-Core technology from Hypex. Chief distinguishing features are flat frequency response irrespective of load impedance, nearly frequency independent distortion behavior and very low radiated and conducted EMI.
Output impedance is very low at 0,02 Ohm and because of this the frequency response is very flat at all loads.
Very high efficiency at 92%.

The mains switching power supply providing the power amplifier is a compact, high power, highly efficient, regulated half bridge converter with synchronous rectification on the main output rails.
The efficiency is high at 90%.
The main supply voltage is from 90V up to 250V AC (auto switching).
The control unit controls provides the standby mode (consumption 0,12W), monitors the amplifier temperature and potential output voltage error so no protection relays are used. Because of this concept the output impedance is very low. The control unit drives also the power clip indicator and the error indicator.
Optionally, the amplifier can be upgraded with a phono input for MM and MC heads.

Inputs
2x asymetric RCA and 1x symetric XLR @ 1M Ohm
Output
2, 4 in 8 Ohm – 4mm binding posts
Gain / Sensitivity
Line input (RCA) 0,7 Vrms
Phono RIAA MM/MC 5mV/0,5mV
Output power
115W/2 Ohm, 125W/4 Ohm, 60W/8 Ohm

Frequency response
10 Hz — 50 kHz + 0/- 3 dB
Distortion
10Hz-20kHz AES17 Pout – PR/2 – 0,001 %
Dimensions
(W x D x H) 348 x 220 x 50 mm
Weight
2,7 Kg
Finish
Satin Natural/Black anodized aluminum, Stainless Steel