Audio Analogue, since they launched the Puccini in 1995, is known for designing products that the musical lover can trust to emphasise musical virtues above all else.

AAphono has been developed starting by a double operational amplifier configuration that permits to share the total gain between the two amplifiers having in this way a more precise RIAA response. A big effort was made to obtain a good result in this parameter using high quality and low tolerance components used in parallel configuration in order to uniform errors. In order to cancel eventual LP’s fluctuations a subsonic filter has been added between first and second amplifiers to avoid that strong low frequency oscillations would saturate the gain stages. The circuit design has been completed with an offset recover in the last stage and multiple filters in the power supply stage. There are three different toroidal transfomers to supply digital section and left and right analog sections, keeping ground connections separated. All passive components have been carefully selected. Capacitors used for RIAA curve equalization are all plastic film with low tolerance. AAphono is very versatile and simple to use. For MM cartridges it is possible to set the input’s capacitance and resistance, while for MC cartridges, it is possible to set input’s resistance. These regulations can be easily done simply pushing the corresponding buttons under the unit, just behind the front panel, without removing anything or without using many different switches. The selected configuration will remain settled also when the unit will be switched off or disconnected by the power network.
Technical features
Channels : 2
MM gain(@1KHz) : 40dB
MC Gain(@1KHz) : 65dB
Frequency response(+/-0.25dB) : 10Hz – 20KHz
MM SNR : 89dB
MC SNR : 72dB
Standby power consumption(230VAC) : 0.7W
Dimensions(HxWxD) : 87, 220, 372 mm
Weight : 5.8 Kg
High performance D/A converter up to 32bit/768Khz using Sabre ES9038. Amanero USB converter up to 32bit/392KHz. Native DSD up to 512. 7 different digital filters. SPDIF, Toslink, AES/EBU digital inputs. Bluetooth aptX® high quality audio wireless input. Separate boards for each stage. Separate power supplies dedicated to digital and analogue sections. Fully balanced output stage and with discrete audiograde components to perfectly support ultra-low noise and ultra-low distortion digital stage. High quality headphone output. Possibility to use in direct(DAC) or volume regulated mode(DAC + preamp). The drivers to use AAdac connected to computers with Windows operative system can be downloaded at the following link: http://amanero.com/drivers.htm No drivers are required for MAC computers.
Technical features
Channels ; 2
Output level : 2.9 µV (22 Hz ÷ 20 kHz )
Output level(A weighted) : 2.1 µV
Output voltage – balanced(1kHz/0dB) : 3.35 VRMS
Output voltage – unbalanced(1kHz/0dB): 3.35 VRMS
Dynamic range(A weighted) : 124 dB
THD+N(1dB, 1kHz, FS = 48 kHz) : -108 dB
ENOB : 17.65 BIT
Standby power consumption(230VAC) : 0.7W
Dimensions(HxWxD) : 100x220x390 mm
Weight : 5.5 Kg
480W toroidal transformer especially designed for the AAcento, no global feedback connection neither in power amplifier nor in the preamplifier, digital volume control doesn’t make use of operational amplifiers Relay input selector circuits to minimize non linearities, SMD oversized resistors to minimize thermal induced distortion, MM/MC Phono input with switchable subsonic filter, class A zero feedback Headphone Amplifier on board, native differential input, Direct Mode to use the integrated amplifier as a power amplifier in a home theater system, microcontroller based equipment management, balance control, four different selectable volume scales
Technical features
Channels : 2
Phono Input : MM/MC
RCA inputs : 3
XLR inputs : 1
Pre-out : 1
Mono Out : 2
Input impedance : 47 kΩ
Power on 8Ω load : 100W @ 1% THD + N
Power on 4Ω load : 200W @ 1% THD + N
Power on 2Ω load : 300W @ 1% THD + N
Headphones Output Power(pure class A) 16Ω: 500mW
Headphones Output Power(pure class A) 32Ω : 1W
Headphones Output Power(pure class A) 300Ω : 120mW
Sensitivity(8Ω output nominal power) : 600mVRMS
Frequency Response(Att. 0dB, -3dB band) : 100KHz
Output resistance(2Ω nominal power and 1kHz) : 0.4Ω
Input Noise(Band limits 0Hz-80kHz/A-weighted) : ≈10µV/≈5µV
SNR : ≈100 dB
MM SNR : 85 dB
MC SNR : 65 dB
Standby power consumption(230VAC) : < 1W
Dimensions(HxWxD) : 92x445x400 mm
Weight : 14 Kg
Volume control with an encoder that communicates with the four digital high precision Analog Devices potentiometers(two per channel). Volume with four possible curves selectable according to the sensitivity of the speakers. Indications of volume level and selected input, thanks white LEDs with brightness adjustable on two levels, or switched off. Inputs with high-quality gold-plated RCA connectors with Teflon insulation, soldered directly to the input’s board and activated via signal relays. All stages of the amplifier on separate boards. Printed circuit boards have golden copper footprints with double thickness compared to standard PCBs in order to increase the electrical conductivity. Fully dual-mono circuitry. Transformer power 700VA, six pairs of ON-Semiconductor power transistors (three per channel). All internal wiring with pure solid 7N OCC copper conductors, military standard resistors, audiograde polypropylene capacitors, copper binding posts gold plated.
Technical features
Channels : 2
RCA inputs : 4
XLR inputs : 1
Input impedance : 47KOhm
Power on 8Ω load : 80W @ 1% THD + N
Power on 4Ω load : 160W @ 1% THD + N
Power on 2Ω load : 300W @ 1% THD + N
Sensitivity(8Ω output nominal power) :490mVRMS
Frequency Response(Att. 0dB, -3dB band) : 80KHz
Output resistance(2Ω nominal power and 1kHz) : 0.17Ω
Input Noise(Band limits 0Hz-80kHz/A-weighted) : =30µV/=10µV
SNR : =110 dB
Standby power consumption(230VAC) : 0.7W
Dimensions(HxWxD) : 120x445x390 mm
Weight : 15.5 Kg
The amplifier is fully thought of as composed of three separate elements. 1. Power. It ‘made with a 600VA transformer for each channel. The rectifier bridge is realized with discrete diodes ultrafast 50A each. The filtering capacity is 16800μF by branch so the amplifier has a total filter of 67200μF. At the switching on, the inrush current is limited by resistors variable with the temperatures that after the powering are excluded from the signal path. 2. Amplifier. There are two amplifiers (right channel and left channel) totally separated each another both as ground, as power supply stages connections. They have no common link. Even the digital commands for the control of volume chip are optically isolated. It’s real a dual mono configuration. The copper footprints of the PCB have a double thickness compared to the standard to ensure the passage of large currents involved. The routing of the PCB has long been studied to optimize the signal paths and maintain the symmetry of the stages. 3. Preamplifier. Just like the power amp circuits also preamplifiers are dual mono. Immediately behind the input connectors there are relays for the channels switching followed by a discrete components buffer, to isolate the amplifier from the source. The maximum acceptable input voltage is approximately of 6VRMS. The buffers, both balanced as for the inputs as for the outputs, ranging for driving in class A the four(for each channel) volume chips. The latter, as in the case of the Puccini are simply strings of resistors without any operational inside them. This choice was made to not have any kind of global feedback within the Maestro. After the volume control stage we have the real preamp that amplifies up to about 12dB. The three elements described above are physically housed on three separate boards so it’s like having a power supply, a preamplifier and a separate power amp.
Technical features
Channels : 2
RCA inputs : 3
XLR inputs 2
Input impedance : 47KOhm
Maximum input signal : 6Vrms
Power on 8Ω load : 150W @ 1% THD + N
Power on 4Ω load : 300W @ 1% THD + N
Power on 2Ω load : 500W @ 1% THD + N
Sensitivity(8Ω output nominal power) : 720Rrms
Frequency Response(Att. 0dB, -3dB band) : 90KHz
Output resistance(2Ω nominal power and 1kHz) : 0.2Ohm
Input Noise(Band limits 0Hz-80kHz/A-weighted) : =20µV/=10µV
SN : =100 dB
Standby power consumption(230VAC) : 0.7W
Dimensions(HxWxD) : 168x450x550 mm
Weight : 31 Kg
Inductive power supply to reduce any type of disturb from the mains to the line stage, zero global feedback from input to output, fully differential circuit (differential input and differential output) with discrete components dual-mono configuration, digital volume control without operational amplifiers, relay input switches to minimize non-linearity, oversized military resistors to minimize thermal distortion, “Audiograde” capacitors based on Airtech specification, microcontroller management, Airtech internal wiring and gold plated connectors.
Technical features
Channels : 2
RCA inputs : 3
XLR inputs : 2
Unbalanced outputs : 2
Balanced outputs : 2
Input impedance : 47Kohm
Unbalanced output gain : 5dB
Balanced output gain : 11 dB
Frequency response (attenuation 0.5dB) : 200KHz
Unbalanced output noise (Band 0 Hz – 8kHz) : ≈24µV
Unbalanced output noise (Band 0 Hz – 8kHz) – A we : ≈9µV
Balanced output noise (Band 0 Hz – 8kHz) : ≈37µV
Balanced output noise (Band 0 Hz – 8kHz) – A weighted : ≈14µV
SNR(0dB/A weighted/ref. 2Vrms) – unbalanced output : ≈107dB
SNR(0dB/A weighted/ref. 2Vrms) – balanced output : ≈103dB
Standby power consumption(230VAC) : 0.7W
Dimensions(HxWxD) : 140x450x380 mm
Weight : 12 Kg
Zero Global feedback, all stages fully balanced, dual-mono configuration and discrete components circuits, power stage with 12 bipolar transistors per channel, 56000μF filter capacity per channel, oversized military resistors to minimize thermal distortion, “audiograde” capacitors on Airtech specifications, micro-controller management.
 
Technical features
Channels : 2
RCA inputs : 1
XLR inputs : 1
Input impedance : 47Kohm
Power on 8Ω load : 250W(1000W mono)
Power on 4Ω load ; 500W(1700W mono)
Power on 2Ω load : 950W(2200W mono)
Power Amp gain : 26db
Sensitivity(8Ω output nominal power) : 2.3Vrms
Frequency Response(Att. 0dB, -3dB band) : 110KHz
SNR : >110dB
Output resistance (rated power on 8Ω at 1kHz) : 0.15Ω
Noise reported at the input (0Hz-80kHz) : ≈10µV
Noise reported at the input (0Hz-80kHz) – A weighted : ≈4µV
Standby power consumption(230VAC) : <1W
Dimensions(HxWxD) : 221x450x428 mm
Weight : 41.2 Kg

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