The Audio Hungary Qualiton A35 is a push-pull Class AB amplifier, designed to serve analogue enthusiasts.
Those who need a combination of a high-performance vacuum tube power amplifier and a versatile preamplifier, along with sophisticated technical details, built into a single chassis.
In this way, perfect matching is achieved – both sonically and technically – between the main signal processing sections.
All internal circuits were designed from scratch, utilising in house selected components, premium film capacitors, ceramic composition resistors, motorised ALPS potentiometer, 2mm thick 2 Oz copper PCB,
Also in house manufactured power transformer is shielded noiseless oversized, toroidal transformer and the output transformers are also toroidal and are manufactured in house.
This attention to detail results in the creation a low noise and low distortion high performance vacuum tube integrated amplifier, which is hand made in Hungary at their factory.
The Qualiton A35 integrated amplifier features the latest version of their sophisticated Automatic Bias Control System for the four power tubes too.
This circuit continuously monitors the behaviour of each tube and regulates the bias voltages accordingly, ensuring the smallest possible output voltage noise while guaranteeing the highest degree of linearity of the output stage.
It also prevents the sensitive, high permeability transformer cores from saturating by precisely equalizing the quiescent currents of the power tubes.
Finally, the bias system has a built-in soft-start function too, which prevents the tubes from drawing excessive current during start-up and eliminates pops and noises during power-up.
The above means that no further adjustment is required once the electron tubes supplied with the unit have been installed, the circuit automatically takes care of everything.
The A35 is a 2 x 35 watts integrated amplifier and comes from the factory with the following tubes:
4 x 7581A
2 x 6922
2 x 12AX7 tubes
The Audio Hungary Qualiton A35 is also compatible with KT66, KT77, 6L6, 6P3S, 5881 tubes
| Rated output power |
2 x 35 W, stereo |
| Total harmonic distortion |
< 0,3% (f = 1 kHz, rated output) |
| Frequency response |
22 Hz to 80 kHz (-3 dB, rated output) |
| Input sensitivity, Balanced Stereo IN |
500 mV, to rated output |
| Input sensitivity, Unbalanced Stereo IN |
500 mV, to rated output |
| Number of input ports / channel |
3 unbalanced Stereo IN, 1 balanced Stereo IN |
| Number of output ports / channel |
1 unbalanced Power OUT |
| Gain |
+30 dB (RL = 8 Ohm) |
| Input impedance, Balanced Stereo IN |
40 kOhm |
| Input impedance, Unbalanced Stereo IN |
10 kOhm |
| Load impedance |
4 Ohm and 8 Ohm |
| Signal-to-noise ratio |
> 98 dB (RL = 8 Ohm, rated output) |
| Power requirements |
300 W |
| Tubes required |
4 x 7581A; 2 x 12AX7; 2 x 6922 |
| Weight |
15 kg |
| Dimensions |
29 x 37 x 19 cm |
