Audio Hungary Qualiton C200 Preamplifier
Overview
Tungsram ECC83 Vacuum Tubes
The Tungsram ECC83 vacuum tube is a high-quality preamplifier tube made in Hungary. Known for its natural and accurate sound, this tube offers smooth and extended treble, balanced mids, and firm bass, making it a highly regarded component in high-fidelity audio systems. Our company proudly holds a large stock of new-old stock (NOS) Tungsram ECC83 tubes, which we utilize in our C200 preamplifier. This ensures each unit benefits from their renowned sound quality and durability.
Custom Power Transformer
Just 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.
MM Phono Preamplifier
Over a decade ago, we embarked on our journey with our first MM phono preamplifier prototype. Since then, we've continuously refined these circuits to achieve exceptional sonic and technical performance. We're especially proud of the MM phono preamplifier of the C200, which represents the pinnacle of our efforts, offering magical sound quality and solid measured performance. This version, featuring only vacuum tubes and passive elements, embodies absolute tonal purity and honesty.
Headphone Amplifier
The preamplifier features an integrated headphone amplifier, engineered to deliver a completely transparent sound character. The design ensures that it does not color or alter the detailed sound image of the preamplifier. It is able to drive a wide range of headphones effectively, offering a rich and engaging listening experience.
Aesthetics
Relay-Controlled Input Selection
The 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 Control
The 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 Control
The 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 Components
-
Tested 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.
-
Gold-Plated Ceramic Tube Sockets
Ensuring reliable connections. -
Gold-Plated Audio Terminals
Enhancing signal transmission quality. -
Film Capacitors
We exclusively use film capacitors in our audio circuits for optimal performance. -
Ceramic Composition Resistors
These resistors are placed in critical positions to enhance reliability. -
Long-Life, High-Temperature-Tolerant Capacitors
Employed in our power supplies to withstand demanding conditions.
Tech Specs
Line Section
20 Hz - 22 kHz bandwidth, without weighting filter
> x dB below rated output
with A-weighting filter
Phono Section
20 Hz - 22 kHz bandwidth, without weighting filter
> x dB below rated output
with A-weighting filter
General
2 balanced line level inputs (BALANCED INPUTS 1-2)
1 PHONO level input (PHONO MM)
1 balanced line level output (BALANCED OUTPUTS)
1 HEADPHONE output per channel
Volume Up
Volume Down
Mute