MX Series Stereo Integrated Amplifiers
Finish
| Anodised Black fascia with Black casing | Anodised Silver fascia with Silver-Grey casing |
MXI2080 Stereo Integrated Amplifier
- 8 line inputs, including a short path “Line Direct” input and two Tape loops
- Low-noise, low-distortion precision solid state volume control offering many benefits:
- No moving parts so no wear or “crackle”
- Totally consistent performance with negligible channel balance errors
- Signal-to-noise ratio improved at low volumes
- Precise and repeatable setting of volume - in 0.5dB steps
- Channel balance adjustments can be made without affecting sound quality
- Volume “trim” level can be set individually for each input to allow all sources to sound equally loud
- Preamp section has its own power transformer and 5 separate power supply regulators, each optimised for its individual task
- The MXI2080’s 80W power amplifier features:
- High output current design, supported by generously rated output transistors and reservoir capacitors and a massive (3.4kg) toroidal transformer ensures smooth, effortless delivery of power
- Selected main feedback resistor for open, transparent and natural sound
- Each amplifier channel has its own processor monitoring temperature, output current and DC. Any deviation triggers isolation of its loudspeaker output and a status indication on the front panel display
- 5 separately regulated power supplies for each amplifier channel ensure that all low level circuitry has clean, low-noise power, effectively isolated from the output stages
- Line-out connector allows easy wiring for bi-amping or other applications
- Bright blue Vacuum Fluorescent Display (VFD), shows selected input and volume setting in 0.5dB steps and allows access to setup menus
- Large rotary control for volume and menu navigation
- Menu allows individual level trims adjustment for each source, re-naming of sources and precision adjustment of channel balance
- Myryad “Smart My-Link®” for intelligent system operation with other Myryad products
Finish
| Anodised Black fascia with Black casing | Anodised Silver fascia with Silver-Grey casing |
Preamplifier
The selected input signal is routed via the input and tape monitor relays (all with gold-plated contacts) to the preamplifier input stage (Burr-Brown OPA2604). The “Line Direct” input bypasses the tape monitor relay so that there is only a single switch contact in the signal path and no loading from the tape outputs.
From the input stage the signal passes to the processor-controlled precision volume IC which forms part of the feedback loop of the output amplifier (another Burr-Brown OPA2604). This in turn feeds directly to the two pairs of Line outputs. The result is a fully DC coupled preamp with a very short signal path ensuring maximum signal transparency.
The volume control IC has its own isolated low-noise plus/minus supply regulators in addition to the plus/minus supply regulators for the op-amps. There is even a separate low-noise supply for the relays to keep noise to an absolute minimum.
Power Amplifier
The MXI2080 has two totally separate amplifier modules, each powered from its own dedicated secondary winding on the power transformer. The 3.4kg toroidal power transformer’s two secondary windings each feed directly through ultra-fast rectifiers to 14,000µF of reservoir capacitors – per channel. In addition high-speed film capacitors are wired across the reservoirs to maintain low impedance at high frequencies. This substantial power source connects directly to the amplifier’s output transistors. A separate rectifier system feeds the power regulators for the amplifier’s sensitive input stages. The power transformer is the only component shared by both amplifier channels. The secondary windings and all circuitry thereafter are separate for each channel, ensuring excellent separation and stereo imaging.
The power amplifier uses Myryad’s signature DC5* circuit configuration. The complementary push-pull class A input stage has an exceptionally wide bandwidth, combined with low noise and distortion. From here, the signal is passed on, via the complementary cascode stage, to the main class A gain stage. All of this low power circuitry is powered from low-noise, low-impedance, high isolation regulated power supplies. This ensures that these sensitive circuits are totally unaffected by any noise or distortion present on the high current supplies for the outputs.
The output stage uses the well-proven triple-emitter-follower configuration with two 150W, 230V output transistors per channel. The combination of these output devices and the generously rated power supply results in a peak output current in the region of ±40 amps.
The output signal passes through a high-current muting and protection relay before going on to the gold-plated 5-way binding post speaker terminals. The MXI2080’s amplifier uses specially selected close tolerance main feedback resistor to maintain dynamic linearity.
The DC output voltage is held down to a few millivolts by a DC servo that uses a low-noise high-speed FET op-amp and high-speed polypropylene film capacitors. There is only a single high-speed coupling capacitor in the signal path – at the amplifier input.
* Double Complementary Cross-Coupled Cascoded Current-mode feedback
Continuous rated power output 8W: | 80W |
4W: | 120W |
THD (@80% rated power, 8W 20Hz-20kHz): | 0.02% |
Inputs: | Line direct, Tape, CD-R, CD, Tuner, TV, DVD, Aux |
Signal/Noise ratio (A weighted, ref. 80W) | >107dB |
Line input sensitivity (ref. 80W output): | 320mV (user trimmable 160-640mV) |
Frequency response (20Hz - 20kHz) | ±0.2dB (-2dB @ 96kHz) |
Input impedance | 22 kW // 200pF |
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Physical Specification |
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Dimensions (width x height x depth) | 436 x 95 x 355mm |
Weight, Net. | 11.0 kg |
Fascia | 9mm thick bead-blasted aluminium anodised with silver or black finish |
MXI2150 Stereo Integrated Amplifier
- 8 line inputs, including a short path “Line Direct” input and two Tape loops
- Low-noise, low-distortion precision solid state volume control offering many benefits:
- No moving parts so no wear or “crackle”
- Totally consistent performance with negligible channel balance errors
- Signal-to-noise ratio improved at low volumes
- Precise and repeatable setting of volume - in 0.5dB steps
- Channel balance adjustments can be made without affecting sound quality
- Volume “trim” level can be set individually for each input to allow all sources to sound equally loud
- Preamp section has its own power transformer and 5 separate power supply regulators, each optimised for its individual task
- The MXI2150’s 150W power amplifier features:
- Each power amplifier channel is a totally separate module with its own power transformer
- High output current design, supported by generously rated output transistors and reservoir capacitors and a massive (3.4kg) toroidal transformer for each channel ensures smooth, effortless delivery of power
- Vishay bulk-foil and 0.1% tolerance feedback resistors for open, transparent and natural sound
- Each amplifier channel has its own processor monitoring temperature, output current and DC. Any deviation triggers isolation of its loudspeaker output and a status indication on the front panel display
- 5 separately regulated power supplies for each amplifier channel ensure that all low level circuitry has clean, low-noise power, effectively isolated from the output stages
- Line-out connector allows easy wiring for bi-amping or other applications
- Bright blue Vacuum Fluorescent Display (VFD), shows selected input and volume setting in 0.5dB steps and allows access to setup menus
- Large rotary control for volume and menu navigation
- Menu allows individual level trims adjustment for each source, re-naming of sources and precision adjustment of channel balance
- Myryad “Smart My-Link®” for intelligent system operation with other Myryad products
Finish
| Anodised Black fascia with Black casing | Anodised Silver fascia with Silver-Grey casing |
Continuous rated power output 8W: | 150W |
4W: | 230W |
THD (@80% rated power, 8W 20Hz-20kHz): | 0.02% |
Inputs: | Line direct, Tape, CD-R, CD, Tuner, TV, DVD, Aux |
Signal/Noise ratio (A weighted, ref. 150W) | >110dB |
Line input sensitivity (ref. 150W output): | 440mV (user trimmable 220-880mV) |
Frequency response (20Hz - 20kHz) | ±0.2dB (-2dB @ 96kHz) |
Input impedance | 22 kW // 200pF |
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Physical Specification |
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Dimensions (width x height x depth) | 436 x 190 x 479mm |
Weight, Net. | 22.0 kg |
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Fascia | 9mm thick bead-blasted aluminium anodised with silver or black finish |