The Qualiton A35i Integrated Amplifier delivers 2 x 35 W of stereo power, 0.3% total harmonic distortion, and a 98 dB signal-to-noise ratio. Featuring versatile input options, robust build with balanced and unbalanced inputs, and supported by premium tubes for a warm, rich sound. Compact and weighing 15 kg, it fits elegantly into any setup, perfecting your audio experience with clarity and precision.
Unleash the power of sound with the Qualiton A35i Integrated Amplifier. Designed for discerning audiophiles, it delivers a robust 2 x 35 W stereo output with a frequency response spanning 22 Hz to 80 kHz, ensuring every note is vibrant and clear. Boasting minimal 0.3% total harmonic distortion at 1 kHz, and a stellar 98 dB signal-to-noise ratio, the A35i captures nuances in your music like never before. Its versatile input options include 3 unbalanced Stereo IN and 1 balanced Stereo IN, accommodating all your audio sources effortlessly. Crafted with precision, featuring 40 kOhm input impedance for balanced and 10 kOhm for unbalanced inputs, it effortlessly drives speakers with 4 Ohm or 8 Ohm load impedance.
Equipped with premium 4 x 7581A, 2 x 12AX7, and 2 x 6922 tubes, the A35i infuses your sound with warmth and depth. Sleek and compact at W:29 x H:19 x L:37 cm, weighing 15 kg, it blends seamlessly into any audio setup, elevating your listening experience with its superior performance and craftsmanship.
Power TubesThe amplifier’s power block is specifically designed for 7581A power tubes, known for their high power, low distortion and beautiful sound character. This creates the perfect foundation for our amplifier, further enhanced by our custom output transformers for excellent low and high frequency performance. Moreover, our proprietary Automatic Bias System ensures seamless operation with any brand of 7581A / 6L6 / 5881 / KT66 or KT77 beam tetrodes, allowing you to choose your favorite without needing any modifications.
Custom Output TransformersThe transformers of our amplifiers are custom-designed and built in our in-house transformer workshop. Our output transformers are constructed using high-permeability, large cross-section toroidal magnetic cores, which undergo initial impregnation during the production process. Following this, the winding process begins, utilizing a multi-layered, sectioned, and specially arranged winding configuration. This meticulous design ensures optimal performance across both low and high frequencies. Once the winding is complete, the transformers are encased in metal shielding cans to minimize electromagnetic interference. Finally, they are potted using an epoxy compound to eliminate mechanical vibrations and associated noises.
Custom Power TransformerJust like our output transformers, our power transformers are also custom-designed and built in our in-house transformer workshop. We manufacture them with the same precision and attention to details: the high-permeability, large cross-section toroidal cores are also impregnated, and then the winding process follows. The parameters of the windings are designed to avoid saturation of the magnetic core and to ensure efficient operation even under heavy load conditions. It is important to note that we use double electromagnetic shielding for our power transformers. Finally, we employ the same epoxy compound used to pot the output transformers to eliminate mechanical vibrations and associated noises.
Automatic Bias SystemThis circuit continuously monitors the behavior 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. Additionally, it prevents the sensitive, high-permeability output transformer cores from saturating by precisely equalizing the quiescent currents of the power tubes. Furthermore, the bias system incorporates a built-in soft-start function, which prevents the tubes from drawing excessive current during start-up and eliminates pops and noises. The result is that no further adjustment is required once the electron tubes supplied with the unit have been installed; the Automatic Bias System takes care of everything.
Aesthetics
Our approach to the visual design centers around maintaining visual neutrality. We intentionally avoid overdesigning the appearance, aiming for aesthetic simplicity and cleanliness. Our products are not meant to be theatrical or ostentatious; rather, they seamlessly integrate into the audio system’s interior without disrupting the user experience. However, we add unique touches that make our devices instantly recognizable.
Relay-Controlled Input SelectionThe amplifier features a total of four analog inputs: three unbalanced Line IN and one balanced Line IN. Selection between these inputs is accomplished using precision, low-power, ultra-miniature Japanese relays with ultra-low contact resistance gold overlay silver contacts. The front panel Status LEDs indicate the currently active or inactive inputs.
ALPS Motorized Volume ControlThe japanese made ALPS passive volume control potentiometers are a top choice among audiophiles due to their high quality, low noise, and smooth operation. Precision engineering and premium materials ensure superior sound performance, while minimal electrical noise keeps the audio signal clean and accurate. Their design allows for consistent volume adjustments, crucial for maintaining fidelity. Known for durability, these potentiometers offer reliable performance over time.
4-Function Remote ControlThe remote control features a black matte finish. Alongside the basic VOLUME UP and VOLUME DOWN functions, it also includes a convenient MUTE function and an INPUT SELECTION button.
Special ComponentsTested and Selected Vacuum Tubes
The power tubes in all our amplifiers come in matched quads. The preamp tubes are selected for low noise, symmetry and minimum distortion.
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