Morel MPS 2.150 Limited - 2 Channel Amplifier

The Morel MPS 2.150 Limited - 2 Channel Amplifier was developed to commemorate Morel’s 45th anniversary. The MPS Limited raises the standards in sound amplification.

HiFi Purity

From input to output, there’s no doubt the Morel MPS 2.150 Limited is special. This is immediately evident upon first glance as all connections are gold plated including special chassis-mounted RCA connections, and robust power and speaker wire connections.

Inside each amplifier, the signal path has been meticulously designed and components chosen for their superior performance, starting with the selection of the famed Burr-Brown OPA2134 op-amps. These op-amps give the MPS Limited their remarkably natural and detailed sonic profile, and the low tolerance surface mount components and WIMA metallised film capacitors preserve the integrity of the original signal as it flows to the amplifier section.

Exceptional Sanken bi-polar output transistors (MPS 2.150 only) were chosen for their superior linear gain, high-output, and low distortion, while ultra-low ESR, high voltage Rubicon capacitors in the power supply and output sections provide the amplifiers with the dynamics and resolution for truly high-end performance.

Optimised for Thermal and Power Efficiency

The compact chassis of MPS Limited was carefully optimised to handle the robust power of each amplifier. Using advanced computational analysis, our engineers developed the two models to share the same chassis dimensions while managing the thermal demands of the two different amplifier topologies. This ensures the power output of each amplifier is maximized and will remain stable while being played at any volume level.

Selectable Voltage Rail Power Supply

The Morel MPS 2.150 Limited was developed with a unique, selectable voltage rail design. Since class A/B amplifiers run hotter than their class D counterparts, this feature allows users to maximise the power delivery of the amplifier based on the impedance of the speaker it is powering, thus keeping the amplifier within the optimal thermal range.

Upon installation, one selects the proper mode beneath the amplifier. In high-power mode, the MPS 2.150 Limited produces 150 watts x 2 into a 4-ohm load. Switch to high-current mode and the amplifier is now optimised to make 150w x 2 into 2 ohms.

This simple solution makes for an exceptionally stable platform and a highly effective way to exploit the power potential of the amplifier.

The Only Stackable HiFi Car Amplifiers

Keeping the amplifier footprint small compact and tidy was a high priority, but with many systems designed around active configurations and DSPs, multiple channels of amplification are needed.

More channels of amplification require multiple amplifiers and additional space. To address this concern, the MPS Limited models are fitted with unique cast aluminium end caps with removable plates. These allow for various mounting options including stacking the amplifiers. Using the optional MPS-STKP stacking plates gives installers the option to minimise floor space consumption with multiple amplifiers by stacking them vertically.

Not only does this method save space, the chassis and stacking plates were designed to maintain the maximum thermal efficiency of the amplifier.

Installation Forward

Like the current MPS amplifiers, installation and ease of use were prioritised. Single-sided circuit layouts keep all connections on one side of the amplifier, making installation simple and clean.

Preamp tuning and setting options are located discretely under a removable panel at the top of the amplifier along with auto turn-on selection via remote +12V, signal sensing or DC turn-off sensing.

Technical Specifications

• High Power:
• 4 Ohm Stereo: 150w x2
• Minimum Impedance: 4 Ohm Stereo
• High Current:
• 4 Ohm Stereo: 100w x 2
• 2 Ohm Stereo: 150w x 2
• 4 Ohm Mono / Bridged: 300w x 1
• Minimum Impedance: 2 Ohm Stereo
• THD+D: 0.02%
• Frequency Response (+/- 1dB): 10Hz - 80kHz
• S/N Ratio (Rated Power, A-Weighted): 111dB
• S/N Ratio @ 1W (CEA-2006): 91dB
• Channel Separation: 68dB
• Operating Voltage: 8.1 - 16.5 VDC
• Input Sensitivity: Low: 0.2-4V - High: 0.4-8V
• Height (H): 2" (51mm)
• Width (W): 6.7" (170mm)
• Length (L): 12.65" (322mm)

Further Information

Morel MPS Limited Amplifiers - User Manual (PDF)