AVM Ovation MA 8.3 S Mono Power Amplifiers (Pair)
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AVM Ovation MA 8.3 S Mono Power Amplifiers (Pair)
The AVM Ovation MA 8.3 S is a pair of Class A/AB mono power amplifiers with AVM's new anode-follower tube input stage. In AVM's technical data each amplifier delivers more than 1,100 W into 4 ohms and more than 600 W into 8 ohms, from two amplifier stages bridged in push-pull configuration, two 1,000 VA toroidal transformers, 48 MOSFETs and 544,000 µF of filter capacitance.
The MA 8.3 S is a mono power amplifier in AVM's Ovation S line, the monoblock sibling of the SA 8.3 S stereo amplifier. AVM states that it drives even impedance-critical loudspeakers with supreme composure, and this listing is for a pair.
Key Features of the AVM Ovation MA 8.3 S
- Tube Input Stage: A new anode-follower tube input stage for ultra-wideband frequency response.
- Over 1,100 W Into 4 Ohms: Per amplifier, more than 600 W into 8 ohms and more than 1,800 W into 2 ohms, in Class A/AB.
- Bridged Push-Pull Design: Two amplifier stages bridged in push-pull configuration (Bridge Mode).
- Two 1,000 VA Transformers: With 48 high-performance MOSFETs and 544,000 µF of filter capacitance per amplifier.
- Fully DC-Coupled: No coupling capacitors in the signal path, with automatic offset compensation and current-source-stabilized output stages.
- Dual Differential Input Stage: With one RCA and one XLR high-level input.
- OLED Display and Triggers: A dimmable OLED graphic display, a 5 to 20 V DC trigger input and AVM's AIR trigger.
What Drives the MA 8.3 S?
Each MA 8.3 S uses a Class A/AB architecture with two amplifier stages bridged in push-pull configuration. Two low-stray toroidal transformers rated at 1,000 VA each, 48 high-performance MOSFETs and 544,000 µF of filter capacitance form its power platform.
AVM's technical data rates each amplifier at more than 600 W into 8 ohms, more than 1,100 W into 4 ohms and more than 1,800 W into 2 ohms. Distortion is below 0.02% and intermodulation below 0.01% at 25 W into 4 ohms, with a signal-to-noise ratio above 94 dB(A), a frequency response from below 1 Hz to above 100 kHz (-3 dB) and a damping factor above 400.
The Anode-Follower Tube Input Stage
The MA 8.3 S and SA 8.3 S share AVM's new anode-follower tube input stage, designed for an ultra-wideband frequency response. AVM credits it with a fine musical fluency, combined with high operational reliability and a modern circuit design.
The entire analog circuit is DC-coupled to keep coupling capacitors out of the signal path, with automatic offset compensation, dual differential input stages and current-source-stabilized output stages. Integrated power filtering covers all relevant voltage ranges.
Inputs, Control and Finishes
Each MA 8.3 S has one RCA and one XLR high-level input, with an input sensitivity of 2.1 V (for 1000 W into 4 ohms) and input impedances of 20 kohm and 40 kohm. A trigger input takes 5 to 20 V DC, AVM's AIR trigger (AVM Intelligent Remote) is built in, and a dimmable OLED graphic display is fitted.
The massive aluminum enclosure comes in silver, brushed black, or the Cellini version with a chrome fascia, and the MA 8.3 S is delivered in a flight case.
Who Is AVM?
AVM Audio Video Manufaktur has built hi-fi by hand in Germany since 1986, and its products are sold in more than 50 countries. The range runs from the AVM 30.3 series through the Inspiration and Evolution lines to Ovation S.
Where the MA 8.3 S fits in the AVM power amplifier line
How the Ovation MA 8.3 S compares to AVM's other power amplifiers, and what each step adds.
Every AVM power amplifier here uses MOS-FET output devices, and the SA 8.3 S and MA 8.3 S add AVM's anode-follower tube input stage. Browse the full AVM range.
The Listening Room Difference
We don't just sell high-end audio, we provide a level of service that's as refined as the products we offer. When you invest in mono power amplifiers like the AVM Ovation MA 8.3 S, you deserve more than a box on your doorstep. You deserve a partner who understands the art of sound and is committed to helping you experience it at its absolute best.
Owner Michael Hoatson will personally deliver the MA 8.3 S pair to your home, anywhere in the country. Not a curbside drop-off. Painstaking setup, room placement, and full system integration, from a third-generation audio family with decades of experience. That is how we bring a system to life.
AVM Ovation MA 8.3 S Specifications
| Type | Mono power amplifiers (pair), Class A/AB, bridged, tube input stage |
| Output Power (Each) | Above 600 W (8 ohms), above 1,100 W (4 ohms), above 1,800 W (2 ohms) |
| Amplification Factor | 30 (29.5 dB) |
| Input Sensitivity | 2.1 V (1000 W into 4 ohms) |
| Inputs | 1 RCA (20 kohm), 1 XLR (40 kohm) |
| Distortion (25 W / 4 ohms) | Below 0.02% |
| Intermodulation (25 W / 4 ohms) | Below 0.01% |
| Signal-to-Noise (25 W / 4 ohms) | Above 94 dB(A) |
| Frequency Response (-3 dB) | Below 1 Hz to above 100 kHz |
| Power Bandwidth (25 W / 4 ohms) | 5 Hz to above 50 kHz |
| Rise Time / Slew Rate | 10 µs / above 15 V/µs |
| Damping Factor (8 ohms) | Above 400 |
| Power Supply Design | 2 x 1,000 VA toroidal transformers; 48 MOSFETs; 544,000 µF |
| Mains Supply | 230 V / 50 Hz, 3,500 W maximum |
| Consumption (Each) | 120 W without signal, below 0.5 W standby |
| Dimensions (Each, W x H x D) | 432 x 253 x 420 mm (17.0 x 10.0 x 16.5 in) |
| Weight | 42 kg each, 84 kg per pair (92.6 lb each) |
| Finishes | Silver, Brushed Black, Cellini chrome |
How much power does each AVM MA 8.3 S have?
How much power does each AVM MA 8.3 S have?
AVM's technical data rates each MA 8.3 S at more than 600 W into 8 ohms, more than 1,100 W into 4 ohms and more than 1,800 W into 2 ohms. Each amplifier bridges two Class A/AB stages in push-pull configuration, with two 1,000 VA toroidal transformers and 48 MOSFETs.
Will the AVM MA 8.3 S work on US 120-volt power?
Will the AVM MA 8.3 S work on US 120-volt power?
AVM's published technical data for the MA 8.3 S lists a 230 V / 50 Hz power supply. Get in touch with Mike to confirm a US 120 V version before you order.
What is the difference between the AVM MA 8.3 S and the SA 8.3 S?
What is the difference between the AVM MA 8.3 S and the SA 8.3 S?
Both use AVM's anode-follower tube input stage and a fully DC-coupled Class A/AB design. The SA 8.3 S is one stereo amplifier rated above 420 W per channel into 4 ohms. The MA 8.3 S is a pair of mono amplifiers, each bridging two amplifier stages for more than 1,100 W into 4 ohms, with 48 MOSFETs and 544,000 µF of filter capacitance per amplifier.
