ART / HVA4

This is a 4-channel high impedance power amplifier made by ART. Each channel is equipped with gain control and LED indicators (signal, clip, protection).

■High impedance power amplifier
■4ch
■100/70V compatible
■4x135W
■1U
■6.2kg

■Product overview
The HVA4 is a class D amplifier for facilities. It supports both 70V/100V high impedance operation (selectable with a dip switch). Each channel is equipped with gain control and LED indicators (signal/clip/protection). The input and output terminals are Euroblocks. With 4CH and a 1U size, it can be used in a variety of situations.

■Main features
・Large-capacity switching power supply provides high output with low noise and distortion
・Protection functions for output short circuit, overheating, and mute when powered on/off
・Limiter included
・Euroblock input/output
・Front panel gain control for immediate operation
・LEDs (signal, clip, protect) for checking operation status
・Amplifier output can be disconnected remotely
・Remote testing possible
・Remotely visible fault status indicator
・2-channel facility amplifier
・70/100V line operation
・Output (70/100V): 4 x 135W
・1U rack size
・Class D amplifier with switching power supply

■Specifications
・Output power (100V line): 1CH operation: 150W x 2 | All CH operation: 135W x 4
・Output power (70V line): 1CH operation: 150W x 2 | All CH operation: 135W x 4
・Input sensitivity: 0.9-1.1V (±1dBV)

- Input impedance: 20k (balanced), 10k (unbalanced)

- Frequency response: 120 Hz to 17 kHz (-3dB)

- Voltage gain (100V): 40 dB

- THD+N: <0.1%

- S/N ratio: >95 dB

- Crosstalk: <-70dB

- Damping factor: >200

- Power supply, output circuit: switching power supply, class D

- Power supply: AC100-240V, 50/60Hz

- Protection circuit: output short circuit | internal overheating

- Input/output terminals: Euroblock

- Controls: Front: power switch, input level control for each channel | Rear: 70V/100V selector

- Indicators: Signal: green LED | Clip: red LED | Power: green LED | Protection: red LED | Test: orange LED

- Dimensions: 483W x 44H x 360D mm

- Weight: 6.2kg