A75 PLUS / CLASS A POWER AMPLIFIER
A dedicated foundation.
For the music you love.
Bring a separate-component system together with Class A stereo amplification, balanced and RCA inputs, and gain settings designed for upstream matching.
VISIBLE CONTROL
Twin analogue meters.
View the amplifier’s operating level alongside front-panel speaker selection, input selection and meter-sensitivity controls.
SYSTEM MATCHING
Four gain settings.
Choose MAX, −3dB, −6dB or −12dB attenuation to match the upstream component. Listening volume is controlled by your preamplifier.
INTERFACE OPTIONS
Balanced or RCA.
Connect a suitable preamplifier using XLR or RCA. Select the matching input interface before listening.
THE PLUS ARCHITECTURE
Look inside.
See what supports the sound.
Independent left and right amplification modules use ten pairs of output devices per channel. The original guide identifies a balanced input stage, dual toroidal transformers and a substantial filter-capacitor bank.
2 × 850W
Toroidal transformer ratings
640,000µF
Combined filter capacitance
Transformer ratings and capacitance describe internal components; they are distinct from speaker-output ratings.
THE SIGNAL PATH
From source to speakers.
Every connection considered.
A75 PLUS is a power amplifier. Add a suitable preamplifier or compatible volume-controlled source to manage source selection and listening volume.
One system. The right match.
Balanced input impedance is 40kΩ; RCA input impedance is 20kΩ. Match the selected interface and gain setting to the upstream component.
The rear panel includes a dedicated bridge input and operating-mode switch. Confirm the wiring and permitted speaker load with MUSMYS before bridged operation.
View the original front-panel control diagram
DIMENSIONS & PLACEMENT
Make room for the music.
Choose a stable support for a 37kg amplifier and keep the top and side heat sinks clear. Allow additional clearance for cables and ventilation.
TECHNICAL DETAILS
Know the details.
Choose with confidence.
Key specifications from the current product information and original guide.
Confirm operating mode, load, wiring and local mains requirements before connection.
| Amplifier type | Class A stereo power amplifier |
|---|---|
| Stereo output · 8Ω | 100W per channel |
| Stereo output · 4Ω | 200W per channel |
| Stereo output · 2Ω | 350W per channel |
| Output rating condition | 20Hz–20kHz |
| Frequency response · rated output | 20Hz–20kHz, +0 / −0.2dB |
| Frequency response · 1W | 0.5Hz–160kHz, +0 / −3dB |
| Signal-to-noise ratio | 121dB |
| Balanced / RCA input impedance | 40kΩ / 20kΩ |
| Input sensitivity · rated output / 1W | 0.87V / 0.11V |
| Maximum voltage gain | 28dB |
| Gain attenuation | MAX / −3dB / −6dB / −12dB |
| Damping factor | 1050 |
| Output devices | 10 pairs per channel; 40 MOSFETs total |
| Power transformers | Two 850W toroidal transformers |
| Filter capacitance | 4 × 160,000µF; 640,000µF total |
| Static / maximum power consumption | 350W / 800W |
| Dimensions · W × D × H | 430 × 550 × 225mm |
| Net weight | 37kg |
| Mains versions | 110V / 220V; confirm destination requirements |
| Power cord | Not included |
DELIVERY & AFTERCARE
A considered journey.
From us to your system.
Contact MUSMYS to confirm packaging, destination coverage, freight charges and handling arrangements for this 37kg component.
For DDP delivery, request a quotation from customer service before ordering. DDP is a paid option; charges and coverage depend on the confirmed quotation.
Which voltage should I select?
What about import duties and taxes?
How do warranty and returns work?
Do I need a preamplifier?
Can I use bridged mono?
Explore the complete original product guide
Ready for your next component?
Select your mains version, or talk to MUSMYS about system matching.
