A1 Integrated Amplifier (2008)

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.

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 |

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 |
|
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 |
|
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 |
|
| 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 |
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