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Lector Audio ZAX-70 - 2 × 70 Watt Solid-State Integrated Amplifier

The ZAX design project marks a new era for amplifiers, introducing new concepts aimed at creating an amplifier capable of driving any load under any input-signal condition. The ZAX design is based on a high-voltage (120 V DC), high-current (±20 A) circuit. To achieve this ambitious goal, our engineers required custom-made components:

• Special high-current, high-voltage transistors capable of handling low-amplitude signals.
• Special output devices featuring transistors capable of handling high currents and equipped with integrated temperature compensation.
• A special high-energy, low-flux-loss AC mains power transformer.

The result is the ZAX design! The ZAX delivers extraordinary sound quality: the FET stage provides a smooth and fluid soundstage, while the high-energy power transistors ensure excellent performance, with detailed high frequencies and authoritative, well-defined bass.

The electronic circuit is based exclusively on discrete components, transistors and FETs (input device), with no integrated circuits used in the signal path! (ICs cannot deliver high current!)

The amplifier features 5 high-level line inputs, an output for the loudspeaker system, and a tape-recording output.

The ZAX-70 replaces the ZAX-60 model. The new integrated amplifier offers increased power of 70 W per channel into 8 ohms and a chassis design that harmonizes with the other models in the range (CDP-603 CD player and Digitube). The ZAX-70 represents the evolution of the ZAX-60 for the “R” series of transistor electronics, characterized by a chassis with rounded sides. The shape is not merely an aesthetic evolution, but also ensures greater chassis rigidity, improved mechanical behavior of the cabinet, and better vibration control.

The ZAX-70 is designed with an exclusively transistor-based circuit, without the use of integrated circuits in the signal path. The bipolar transistors have been selected for their high current capability, reaching a peak current of 12 A! There is only one capacitor in the signal path; it is not electrolytic, but a high-quality film capacitor. There are no limitations on the current capability of the output stage, which can therefore drive loudspeakers with low load impedances.

The volume control is operated by an ALPS Blue Velvet series potentiometer; the control position is indicated by a blue LED, specially designed for its anti-static properties. A volume-controlled passive output allows connection of an active subwoofer or a headphone amplifier.

As with the chassis design, particular attention has been paid to eliminating and controlling every vibration generated by the power transformer.

An aluminum remote control is supplied for operating the amplifier's volume.

List of items included:
- Power cable
- Multifunction remote control
- User and maintenance manual
- Manufacturer's warranty

Technical Specifications:

POWER OUTPUT @ 8 OHM 70 W RMS per Channel
DAMPING @ 100 Hz > 100
Frequency Response – 1.5 dB @ max. power 10–50 kHz
Sensitivity for all line inputs 200 mV
Tape recorder output voltage 150 mV
Total Harmonic Distortion (THD) > 0.1%
Signal-to-noise ratio > 100 dB
Line input impedance 50 kΩ / 220 pF
Power supply and power consumption 110/220 VAC, 190 W, 50/60 Hz
Weight and dimensions 10 kg net – 430 × 300 × 108 mm (W × D × H)

Red Front finish

Second hand unit, In excellent condition, supplied without the original packaging. Fitted with Philips ECG small-signal tubes and a brand-new matched quad of JJ KT88 power tubes. Includes a 1-year warranty.

B-Stock product, (read below) in excellent condition with original packaging, 2 year warranty.

The Rega Brio is an exceptional amplifier: musically complete, has a refined and powerful sound, and goes far beyond its class for balance and tunefulness

ATTENTION: Aurorasound products can only be shipped in Italy, for this reason orders received from abroad will be canceled.

Second hand product, in excellent conditions, with original box, 1-year warranty.

B-Stock product, (read below) in excellent condition with original packaging, 2 year warranty