Monitor Audio IA500-S – 500 Watt DSP Amplifier for the In-wall Subwoofers of the Monitor Audio Creator Series
The Monitor Audio IA500-S is not intended as a general-purpose installation amplifier. Its output stages, DSP functions and controls have been designed around the Monitor Audio WS1-W10 and Monitor Audio WS2-W12 in-wall subwoofers. This defined system approach promises simpler planning, predictable performance and straightforward integration into media rooms, multiroom installations and dedicated home cinemas.
- The Monitor Audio IA500-S completes the low-frequency system behind the in-wall subwoofers of the Monitor Audio Creator Series. Depending on the connected model, it delivers either 250 Watt or 500 Watt, while adjustable crossover settings, dedicated DSP presets, stereo and LFE connections, automatic signal sensing and rack-mounting hardware address the practical requirements of professional custom installation.
An architectural subwoofer may disappear almost completely into a wall, but the electronics driving it remain fundamental to the result. Output power alone is not enough: amplifier, filtering and system tuning must work together if a discreetly installed bass solution is to perform with authority and control.
This is the role assigned to the new Monitor Audio IA500-S. Monitor Audio Ltd. developed the compact DSP amplifier specifically for the Monitor Audio WS1-W10 and Monitor Audio WS2-W12, the two in-wall subwoofer models for which this electronics solution is intended. Rather than asking an installer to combine a general-purpose power amplifier with separate filtering and system tuning, Monitor Audio supplies a clearly defined package in which loudspeaker, amplification and DSP are conceived as parts of the same system.
The resulting specification is focused rather than extravagant: up to 500 Watt of Class D power, adjustable low-pass filtering, three DSP modes, direct access to the principal setup parameters and connections for stereo as well as LFE-based installations.
Key Facts Monitor Audio IA500-S
- DSP-controlled Class D subwoofer amplifier for custom installation
- Developed for Monitor Audio WS1-W10 and Monitor Audio WS2-W12
- 250 Watt into 6 Ohm for the Monitor Audio WS1-W10
- 500 Watt into 3 Ohm for the Monitor Audio WS2-W12
- Frequency response from 16 to 250 Hz
- Adjustable low-pass filter from 32 to 250 Hz
- Impact, Movie and Music DSP modes
- Stereo RCA and balanced LFE connectivity
- 12 V trigger, automatic signal sensing and automatic standby
- Rack-mounting brackets included
- Five-year manufacturer warranty
- Planned availability from January 2027
- Price: € 800,-
One Amplifier for Two Defined Subwoofer Systems
The most significant aspect of the Monitor Audio IA500-S is its deliberately narrow remit. It is not a generic installation amplifier that merely happens to be electrically compatible with the company’s in-wall subwoofers. Monitor Audio positions it as the dedicated electronics component for the Monitor Audio WS1-W10 and Monitor Audio WS2-W12.
This distinction matters in custom installation. A conventional solution requires the integrator to coordinate amplifier power, load requirements, crossover configuration and tonal adjustment. With the IA500-S, those elements are brought together in a system whose components are known from the outset.
According to Monitor Audio, this model-specific approach is intended to provide accurate power matching and controlled, dynamic bass reproduction. It also gives integrators a repeatable basis for planning projects rather than requiring them to assemble and tune a suitable combination from unrelated components.
Monitor Audio first presented the in-wall subwoofer concept for its Creator Series at ISE 2023. The IA500-S now provides the dedicated amplification and control required to turn that concept into a complete low-frequency solution.
Output Power Matched to Each Model
At the heart of the Monitor Audio IA500-S is a Class D amplifier stage rated for a maximum output of 500 Watt. The actual power available depends on which of the two supported subwoofers is connected.
With the Monitor Audio WS1-W10, the amplifier delivers 250 Watt into 6 Ohm at less than 1 per cent THD+N. Connected to the Monitor Audio WS2-W12, it supplies 500 Watt into 3 Ohm.
This is not simply a choice between two nominal power ratings. The defined relationship between amplifier and subwoofer allows each model to operate with an output stage intended for its particular electrical requirements. For an installer, that removes an important variable from the design of the system.
The specified frequency response extends from 16 to 250 Hz at -6 dB. A variable low-pass filter can be set between 32 and 250 Hz, providing sufficient scope to integrate the subwoofer system with different main loudspeakers, room layouts and installation concepts.
DSP Control Without Reliance on an App
Signal processing forms a central part of the IA500-S. Monitor Audio combines model-specific tuning with three equaliser modes named Impact, Movie and Music. These presets allow the fundamental bass character to be adapted to different applications without building an additional control platform around the amplifier.
The front-panel controls include rotary regulators for volume and crossover frequency. Slide switches provide access to Model, Phase, Bass and Mode settings, with phase selectable between 0° and 180°.
For permanent installations, this direct form of adjustment has a practical advantage. Once commissioning is complete, the relevant parameters remain set on the amplifier itself. Basic operation therefore does not depend on an app, network service or external configuration program remaining available.
That simplicity does not turn the IA500-S into an automated room-correction system, nor does Monitor Audio present it as one. Its purpose is to provide the essential tools for matching and configuring the intended subwoofer models within a professionally planned installation.
Stereo and LFE Connections Cover Different Applications
The connection panel accommodates both music-oriented and cinema-based system designs. Analogue sources can be connected through two RCA stereo inputs, while a balanced LFE input is provided on a block connector. Corresponding RCA and LFE outputs allow the signal to be passed on when required.
Two block terminals serve as the loudspeaker outputs and accept conductor cross-sections of up to 4.0 mm². This combination allows the Monitor Audio IA500-S to be used in conventional stereo systems, multiroom projects and home cinemas with a dedicated LFE channel.
Its usefulness is therefore not limited to a single type of room. The same amplifier and subwoofer pairing can be incorporated into a discreet music system, a media room or a dedicated cinema, with the signal path chosen to suit the surrounding electronics.
Designed Around Professional Installation
Several less conspicuous specifications reveal how clearly the IA500-S is aimed at fixed installations. The amplifier can detect a line-level signal above 3 mV and switch on automatically. If no signal is present, it enters standby after 20 minutes.
A 12 V trigger input provides an alternative method of system control and accepts trigger voltages between 5 and 14 V. This enables the amplifier to follow a central controller, AV processor or other suitably equipped component.
Monitor Audio specifies power consumption at 0.5 Watt in standby, 23 Watt while idling and 120 Watt at one-eighth of maximum output. Cooling is handled by a 35 mm axial fan whose speed is continuously adjusted according to temperature. The fan operates across a stated control range of 55 to 100 per cent.
These details may attract less attention than the headline output figure, but they are important in a central equipment rack where reliable switching, predictable thermal behaviour and low standby consumption are part of the overall installation design.
Compact Steel Enclosure for Rack or Standalone Use
The enclosure is made from folded 1 mm sheet steel and is available exclusively in black. Including its accessories, the Monitor Audio IA500-S measures 47 × 488 × 238 mm and weighs 3,63 kg.
Two rack-mounting brackets are included, allowing the unit to be fitted into a central equipment rack. Four rubber feet also make standalone placement possible when a dedicated rack is not part of the project.
The supplied accessories comprise the two rack brackets, four rubber feet, UK and EU mains cables, a 12 V trigger cable, connection terminals and the necessary mounting hardware. The amplifier can therefore be installed without first sourcing basic rack or connection accessories separately.
The Most Important Advantages at a Glance
- Purpose-developed system matching: The amplifier is tuned specifically for the Monitor Audio WS1-W10 and Monitor Audio WS2-W12.
- Up to 500 Watt output: Power is matched to the connected subwoofer, with 250 Watt into 6 Ohm or 500 Watt into 3 Ohm.
- Integrated DSP processing: Core bass-management and system-tuning functions are handled inside the amplifier.
- Three application-oriented presets: Impact, Movie and Music provide direct adjustment for different usage scenarios.
- Stereo and home-cinema integration: RCA stereo and balanced LFE connections support a broad range of system architectures.
- Direct hardware controls: Volume, crossover, model, phase, bass and mode settings can be configured without an app.
- Installation-system control: Signal sensing, automatic standby and a 12 V trigger simplify integration into centrally managed systems.
- Rack-ready construction: The necessary rack-mounting brackets are supplied with the amplifier.
Price & Availability
According to Monitor Audio Ltd., the Monitor Audio IA500-S is scheduled to reach the market in January 2027. The recommended price is stated as € 800,-, and the amplifier will be available exclusively in black. Monitor Audio provides a five-year warranty for the IA500-S.
Conclusion
The Monitor Audio IA500-S follows a convincing principle for custom installation: reduce uncertainty by defining the amplifier and subwoofer as one coordinated low-frequency system.
Its value lies not merely in the maximum output of 500 Watt, but in the combination of model-specific power delivery, DSP processing, adjustable filtering and practical installation controls. Stereo, LFE and trigger connectivity leave enough freedom for very different projects, while direct hardware adjustment keeps commissioning independent of an additional app or network service.
For integrators working with the Monitor Audio WS1-W10 or Monitor Audio WS2-W12, the IA500-S offers a logical and clearly structured route to completing the system. At € 800,-, it also appears appropriately positioned as the dedicated electronics component for a high-quality architectural bass installation.
| Product | Monitor Audio IA500-S |
|---|---|
| Price | € 800,- |
Technical Specifications
| Product | Monitor Audio IA500-S |
|---|---|
| Type | DSP-controlled Class D subwoofer amplifier for custom installation |
| Intended subwoofers | Monitor Audio WS1-W10, Monitor Audio WS2-W12 |
| Amplifier technology | Class D |
| Output into 6 Ohm | 250 Watt, less than 1% THD+N, for Monitor Audio WS1-W10 |
| Output into 3 Ohm | 500 Watt, less than 1% THD+N, for Monitor Audio WS2-W12 |
| Frequency response | 16 to 250 Hz at -6 dB |
| Low-pass filter | 32 to 250 Hz at -6 dB |
| DSP modes | Impact, Movie, Music |
| Phase control | 0° / 180° |
| Controls | Volume and crossover regulators; Model, Phase, Bass and Mode switches |
| Analogue inputs | 2 × RCA stereo, 1 × balanced LFE block connector |
| Analogue outputs | 2 × RCA stereo, 1 × balanced LFE block connector |
| Loudspeaker outputs | 2 × loudspeaker block terminals, conductor cross-section up to 4.0 mm² |
| Additional interface | 12 V trigger |
| Maximum input level | 3.3 Vrms |
| Input impedance | 47 kOhm |
| Automatic switch-on | Line level above 3 mV |
| Automatic standby | After 20 minutes |
| 12 V trigger | 5 to 14 V, 3,5 mm mono jack |
| Power supply | Auto-ranging switch-mode power supply |
| Mains voltage | 85 to 264 V AC, 50/60 Hz |
| Standby power consumption | 0,5 Watt |
| Idle power consumption | 23 Watt |
| Power consumption at one-eighth maximum output | 120 Watt |
| Cooling | 35 mm axial fan, temperature controlled |
| Fan control range | 55 to 100 per cent |
| Enclosure | Folded 1 mm sheet steel |
| Finish | Black |
| Dimensions | 47 × 488 × 238 mm |
| Weight | 3,63 kg |
| Supplied accessories | 2 rack-mounting brackets, 4 rubber feet, UK and EU mains cables, 12 V trigger cable, connection terminals and mounting hardware |
| Warranty | 5 years |
| Brand | Monitor Audio Ltd. |
|---|---|
| Manufacturer | Monitor Audio Ltd. |
| Distribution Austria | R.M.S. State of the Art Audio Products |
| Distribution Germany | Pannes Vertriebs KG |
| Distribution Switzerland | cebrands.ch |
| More about this manufacturer at HiFi BLOG |
