ZX-7 x 450 w Endstufe



The ZX-7 features a true balanced topology. Each of its seven channels consists of two amplifier stages, one for each side - positive and negative - of the wave form. The positive input signal is amplified by the positive amplifier and the negative input signal is amplified by the negative amplifier when a balanced signal is applied to the input. This approach results in lower noise, lower distortion, and eliminates interference from external stray electronic fields. Music reproduction benefits from a cleaner soundstage and increased dynamics, while the presentation of subtle detail is improved appreciably due to the significantly lower noise floor.

Along with its exceptional sonic performance, the ZX-7 is equipped with sophisticated protection capabilities. Advanced optically coupled protection circuitry safeguards the ZX-7 from damage caused by excessive heat, short-circuits, device failures, miswiring, internal faults, reactive loads, and protects loudspeakers from DC and frequencies below 10Hz. Because the protection circuitry is optically coupled for each channel, it is completely isolated from the audio signal path, eliminating any potential degradation of the audio signal inherent in traditional protection schemes.

A formidable combination of power and finesse, the ZX-7 is the obvious choice for audio enthusiasts looking for maximum performance from their listening systems.
  • 300 watts per channel (8ohm)
  • 450 watts per channel (4ohm)
  • Compatible with 2 ohm loudspeaker impedances
  • Full Balanced Topology
  • Completely symmetrical circuit design
  • Dual oversized toroidal transformers
  • Advanced optically coupled protection for each channel
  • Thermal protection from overheating
  • Loudspeaker protection from DC and frequencies below 10Hz
  • Protection against short-circuits, device failures, miswiring and internal faults
  • Stable with mismatched, reactive or unusual loads
  • Large heat-sinks for silent convection cooling
  • Balanced & single-ended input connectors
  • Trigger input for power control from an external device
  • 4 hand-graded outputs per channel
  • High power-supply voltage for extra headroom at the outputs
  • Heavy-duty gold plated output connectors
  • 20 amp service required for full rated output
  • Rack mount option available
  • Height – 5U
Audio Inputs and Outputs:

7 RCA, 7 XLR

Outputs 7 pairs of heavy-duty, gold-plated binding posts

Output Power

300W RMS per channel into 8Ohm from 20Hz to 20kHz
450W RMS per channel into 4Ohm from 20Hz to 20kHz

Minimum Speaker Impediance

4 Ohm

Frequency Response

20Hz to 20kHz +0.1dB/-0.5dB
10Hz to 40kHz +0.1dB/-1.5dB
THD Less than 0.05% at full power ratings

Signal-to-Noise Ratio

Greater than 100dB, ref 300W/8 Ohms (30kHz bandwidth)

IM Distortion

Less than 0.05% at full power ratings
Crosstalk Greater than -60dB @ 1kHz (30kHz bandwidth)

Damping Factor

Greater than 400 @ 10Hz to 400Hz

Input Sensitivity

1V for 176W out @ 8 Ohm

Input Impedance

Minimum 10K
Gain Minimum 31dB

Trigger Input

3.3 to 24 Volts DC ± 10%, 3.5mm T/S jack

Power Requirements

120V 60Hz 12 Amp (domestic)
230V 50Hz 7 Amp (export)