A1 Integrated Amplifier (2008)



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Overview
The new A1 is designed to give superlative sound. All aspects of its circuitry and layout have been designed to this end. Conceptually the circuit elements are similar to our revered kW Series. The only difference is that the A1 has less power (more about his later) and is a compact package.

Within its power range the sound quality of the A1 is equal to anything from anywhere. All it lacks is dynamic headroom. Our idea is that you start with an A1 paired with a relatively modest pair of loudspeakers and get exquisite sound. When you’re ready to upgrade you do not have to throw away the A1, all you need is more headroom. This is easily done by putting either a 550K Supercharger or 750K Supercharge in the system. Then you have created an extraordinary amplification system with none of the usual massive financial losses which are the norm for hi-fi upgrading.

We have a two step plan.

Step one: get an A1 and have beautiful exquisite sound.

Step two: add a supercharger. Now you have a system which makes the most exquisite sound and has no limits in dynamic range.

Our only observation is that the hi-fi dealer won’t like this as you won’t be taking part in the financially ruinous “upgrade waltz”. Sounds good to us and, hopefully, good for you.

The A1 has a wide range of inputs, phono, USB, four line inputs (one with home theatre bypass) and a fully configured tape loop.


Features & Benefits
Class A bias
Sweet, accurate and fluid sound quality
High quality, quiet phono input
Great phono performance
USB input
You can connect your computer or any other USB audio to the A1
Home theatre bypass
Can easily be integrated into home theatre systems
Fully configured tape loop
Can e used wth three-headed tape machines



Features & Benefits

Output
Voltage, RMS
17V
Voltage, Peak-to-peak
48V
Power
26W
Current peak-to-peak
22.8A
Damping factor 142

Output devices per channel

2
Pre-out impedance

47 ohms

 

Line input
THD + N, 20Hz to 20kHz
<0.02%
Signal/noise ratio
-94dB A-wtd
Input sensitivity for full power
120mV
Input impedance
43K ohms
Overload margin
37dB

Channel separation

>52dB
Frequency response

20Hz to 20kHz +0,-0.3dB

 

Phono input

 

Cartridge type
MM
Phono input response
RIAA/IEC combined
Signal/noise ratio
-81dB A-wtd
Input sensitivity
3.3mV
Input impedance
47K ohms
Overload margin

29dB

.

Connections  
Line level inputs 4 pairs line level RCA connectors
1 pair phono (moving magnet) level RCA connectors
Line level outputs 1 pair RCA preamp line outputs (level controlled by volume)
1 pair RCA tape line putputs (fixed level)
Digital inputs 1 USB 1.1 (32,44,48kHz sample rates) type B connection for computer/pda
Speaker outputs

1 pair 4mm banana plug/binding posts per channel

 

Power requirements  
100 / 115 / 230Volts AC 50 / 60Hz (factory pre-set)

130W maximum

 

Accessories  
Mains lead 10 Amp IEC type 1 off
Remote control A1, universal 1 off
Batteries

Size LR03 or AAA, manganese alkaline type 2 off

 

Dimensions  
Unit only  
440mm, 17 1/3 inches wide
77mm, 3 inches high inc. feet
290mm, 11 1/2 inches

deep inc. terminals

 

Unit in shipping carton  
536mm, 21 inches wide
200mm, 7 3/4 inches high
385mm, 15 1/4 inches

deep

 

Weight  
7.15 kg, 15 3/4 lbs Unboxed
10.5 kg, 23 lbs In shipping carton, with all accessories