Hertz Marine HMC U1
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Hertz Marine · Code 78333101
Audio accessory
Marine Audio
Manufacturer image — HMC U1.
Image: Hertz Marine
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Hertz Marine HMC U1: controller for a compatible audio system.
Compatible equipment
Documented connections for specific catalogue codes, including parts, requirements and manufacturer sources. Selected equipment ranges are covered; an unlisted combination does not imply incompatibility. Each connection path is assessed separately and is not a complete installation design.
8 documented connections · Sources checked: 2026-10-10
Explore connections, components & diagrams ↗
Equipment connection guide ↗
HMC U1 · 78333101
HMR 50 · Direct
3.5 mm wired controller input
No additional adapter is required for this connection.
Functions: Basic audio control from HMC U1.
Functionality and zone assignment follow the capabilities of the specific source unit.
HMC U1 has a separate +12 V wire for button illumination.
Hertz Marine — optional accessory tables · Marine catalogue 2.5.2, pp. 58–59 · checked 2026-10-10
HMC U1 — controller connection · FML004B REV.21C, p. 3 · checked 2026-10-10
HMC U1 · 78333101
HMR 50 · Direct
3.5 mm wired controller input
Additionally required:1 × 78333302 — HMA C3.5
Functions: HMC U1 control over a longer cable run.
HMA C3.5 is intended for the 3.5 mm controller connection.
HMC U1 has a separate +12 V wire for button illumination.
Hertz Marine — optional accessory tables · Marine catalogue 2.5.2, pp. 58–59 · checked 2026-10-10
HMC U1 — controller connection · FML004B REV.21C, p. 3 · checked 2026-10-10
HMC U1 · 78333101
HMR 20 · Direct
3.5 mm wired controller input
No additional adapter is required for this connection.
Functions: Basic audio control from HMC U1.
Functionality and zone assignment follow the capabilities of the specific source unit.
HMC U1 has a separate +12 V wire for button illumination.
Hertz Marine — optional accessory tables · Marine catalogue 2.5.2, pp. 58–59 · checked 2026-10-10
HMC U1 — controller connection · FML004B REV.21C, p. 3 · checked 2026-10-10
HMC U1 · 78333101
HMR 20 · Direct
3.5 mm wired controller input
Additionally required:1 × 78333302 — HMA C3.5
Functions: HMC U1 control over a longer cable run.
HMA C3.5 is intended for the 3.5 mm controller connection.
HMC U1 has a separate +12 V wire for button illumination.
Hertz Marine — optional accessory tables · Marine catalogue 2.5.2, pp. 58–59 · checked 2026-10-10
HMC U1 — controller connection · FML004B REV.21C, p. 3 · checked 2026-10-10
HMC U1 · 78333101
HMR 10 / 10D / 15 / 15D / BT · Direct
3.5 mm wired controller input
No additional adapter is required for this connection.
Functions: Basic audio control from HMC U1.
Functionality and zone assignment follow the capabilities of the specific source unit.
HMC U1 has a separate +12 V wire for button illumination.
Hertz Marine — optional accessory tables · Marine catalogue 2.5.2, pp. 58–59 · checked 2026-10-10
HMC U1 — controller connection · FML004B REV.21C, p. 3 · checked 2026-10-10
HMC U1 · 78333101
HMR 10 / 10D / 15 / 15D / BT · Direct
3.5 mm wired controller input
Additionally required:1 × 78333302 — HMA C3.5
Functions: HMC U1 control over a longer cable run.
HMA C3.5 is intended for the 3.5 mm controller connection.
HMC U1 has a separate +12 V wire for button illumination.
Hertz Marine — optional accessory tables · Marine catalogue 2.5.2, pp. 58–59 · checked 2026-10-10
HMC U1 — controller connection · FML004B REV.21C, p. 3 · checked 2026-10-10
View all 8 connections in the guide ↗
Functions & interfaces
Audio accessory
Technical specifications
Equipment type
Audio accessories
Selection & compatibility
This model is included in our catalogue. The exact configuration, compatibility and supply availability are confirmed when you contact us.
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Kit contents, interfaces and required accessories are checked for the exact part number. Connection to another system does not mean all functions are built in.
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