AMP H Series — Audiophony PA 100 V line amplifiers
One power rating. One zone count. Always the same compact format.
Discover the AMP H amplifier range, built for 70 V and 100 V constant-voltage line installations. From 150 W to 500 W per channel, 1 to 8 zones depending on the model, always in the same compact 1U 19″ rack format.

It adapts to your zones.
The only choice is how many zones to feed. Class D, the 1U format, line selection and Euroblock connectors are shared across the whole range.

For a single zone, or to extend an existing installation.
- 2 balanced Euroblock inputs
- 2 Euroblock outputs in parallel
- Volume and power switch on the front
- 70 / 100 V selector on the rear
- 5 kg

Four independent zones, each with its own line, level and two output terminals.
- 4 balanced Euroblock inputs
- Priority TEST input via dry contact
- FAIL, DIS, PRI, GND contacts
- 2 output terminals per channel
- 5.4 to 6.3 kg

Eight 150 W zones in a single unit, for buildings with many small zones.
- 8 balanced Euroblock inputs
- 8 Euroblock outputs
- Levels adjustable on the rear
- 70 / 100 V selector per channel
- 5 kg
Choose the power. The wiring does not change.
Power is rated per channel, on 70 V as on 100 V. On the four-channel models it is given with two channels active; with all four channels loaded, each output delivers 135, 270 or 400 W.
Clean sound, from the amplifier to the end of the line.
The Audiophony PA AMP H range puts the sound quality of your installation first. Every amplifier is designed to deliver a clean, natural signal, with no colouration and no audible distortion — for voice paging, background music or all-day continuous playback alike. The result: clear, controlled sound, from the first metre of line to the last loudspeaker, whatever the size of the installation.
That quality rests on measurable figures: THD+N below 0.1 % and a signal-to-noise ratio above 95 dB keep the sound clean even at full output, while a damping factor above 200 gives tight control over the driver, for a well-defined result — including at the far end of a 100 V line.
All connections at the rear. Protected.
Inputs and outputs on pluggable Euroblock terminals, line selection by switch, and on the four-channel models a second output terminal per channel to daisy-chain a second speaker line without splicing.



How far does the line go?
Maximum length of a 100 V line depending on amplifier power and cable cross-section, without degrading the signal. Never use shielded cable to carry the power signal.
| Power | Min. impedance | 1.5 mm² | 2.5 mm² |
|---|---|---|---|
| 150 W | 67 Ω | 800 m | 1,300 m |
| 300 W | 33.5 Ω | 400 m | 700 m |
| 500 W | 20 Ω | 180 m | 350 m |
The total power of the speakers connected to an output must not exceed the amplifier's power.
Dante, when the network replaces the cable.
The AMP-DANTE4 card fits inside the AMP150.4H, 300.4H and 500.4H. The four channels then receive their sources over the installation network, with no audio line to run to the rack. Routing is handled in Dante Controller.
One range, many kinds of site.
The same amplifier, the same wiring, very different sites: the choice comes down to the number of zones and the power required on each line.

Retail
Continuous background music and priority paging on the same lines, with an independent level trim for each zone.

Offices
Reception, open space, meeting rooms: one channel per zone, with no crosstalk between the spaces.

Hospitality
Lobbies, restaurants, corridors, outdoor areas: up to 8 zones in a single 1U chassis, with cable runs taken care of by the 100 V line.

Education
Multi-zone distribution with priority contacts (FAIL / DIS / PRI), to override every zone with a paging call or an evacuation message.
Seven models. Which one for your installation?
All Class D, 1U, 483 × 44 × 360 mm, 70 V and 100 V lines, protected against short circuit, open circuit, overheating, limiter, ultrasonic and radio frequencies.
AMP150.1H1 channel |
AMP300.1H1 channel |
AMP500.1H1 channel |
AMP150.4H4 channels |
AMP300.4H4 channels |
AMP500.4H4 channels |
AMP150.8H8 channels |
|
|---|---|---|---|---|---|---|---|
| Power | |||||||
| Per channel, 100 V or 70 V | 150 W | 300 W | 500 W | 2 × 150 W2 channels active | 2 × 300 W2 channels active | 2 × 480 W2 channels active | 150 W |
| All channels active | — | — | — | 4 × 135 W74 Ω / 36 Ω | 4 × 270 W37 Ω / 18 Ω | 4 × 400 W25 Ω / 12 Ω | 8 × 135 W74 Ω / 36 Ω |
| Audio | |||||||
| Frequency response | 100 Hz – 20 kHz | 100 Hz – 20 kHz | 100 Hz – 20 kHz | 100 Hz – 15 kHz | 100 Hz – 15 kHz | 100 Hz – 15 kHz | 100 Hz – 15 kHz |
| Signal-to-noise ratio | > 95 dB | ||||||
| THD+N | < 0.1% | ||||||
| Damping factor | > 200 | ||||||
| Voltage gain (100 V) | 40 dB | ||||||
| Input sensitivity | 0.9 – 1.1 V (0 ±1 dBV) | ||||||
| Input impedance | 20 kΩ balanced / 10 kΩ unbalanced | ||||||
| Connections | |||||||
| Euroblock inputs | 2 | 2 | 2 | 4 + TEST | 4 + TEST | 4 + TEST | 8 |
| Euroblock outputs | 2 in parallel | 2 in parallel | 2 in parallel | 2 per channel | 2 per channel | 2 per channel | 1 per channel |
| Priority input | — | — | — | ● | ● | ● | — |
| FAIL / DIS / PRI contacts | — | — | — | ● | ● | ● | — |
| Dante option (AMP-DANTE4) | — | — | — | ● | ● | ● | — |
| Level controls | Front | Front | Front | Front | Front | Front | Rear |
| General | |||||||
| Power supply | AC 220 – 240 V | AC 220 – 240 V | AC 220 – 240 V | AC 220 – 240 V | AC 220 – 240 V | AC 220 – 240 V | AC 220 – 240 V |
| Indicators | Signal, clip, power, protection | Signal, clip, power, protection | Signal, clip, power, protection | Signal, clip, power, priority, protection | Signal, clip, power, priority, protection | Signal, clip, power, priority, protection | Signal, clip, power, protection |
| Cooling | Fan cooled | Fan cooled | Fan cooled | Fan cooled, 62.5 dB at 1 m | Fan cooled, 62.5 dB at 1 m | Fan cooled, 62.5 dB at 1 m | Fan cooled, 62.5 dB at 1 m |
| Dimensions | 483 × 44 × 360 mm · 19″ 1U | ||||||
| Net weight | 5 kg | 5 kg | 5 kg | 5.4 kg | 6.2 kg | 6.3 kg | 5 kg |
| Product page | See the product page | See the product page | See the product page | See the product page | See the product page | See the product page | See the product page |
| Manuals | |||||||
The amplifier is chosen. Now for the line.
Every Audiophony PA 70 / 100 V line loudspeaker connects straight to the Euroblock outputs of the AMP H. All that matters is that the total tap power on each line stays below the channel rating.
Wall-mount speakers
ONDE range
100 V wall-mount cabinets, black or white, 5″ to 8″. For retail, reception areas and meeting rooms.
Discover the ONDE range →
Sound projectors & columns
EXT range
Sound projectors and column speakers built for outdoor areas and large volumes, on a 100 V line.
Discover the EXT range →
Suspended ceilings
Ceiling speakers
CHP and CHF flush-mount ceiling speakers for even, discreet coverage, from the office to the corridor.
Discover our ceiling speakers →







