MX Series Pre & Power Amplifiers
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| Anodised Black fascia with Black casing | Anodised Silver fascia with Silver-Grey casing |
MXP2000 Stereo Pre Amplifier
Introduction
Technical
Specification
The MXP2000 Preamplifier is the core of Myryad MX high-end stereo systems. Built in the beautiful MX Series enclosure it gives the owner full control over up to eight sources with elegant simplicity and transparent sound.
The MXP2000 features:
- 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
- DC coupled throughout
- 5 separate power supply regulators, each optimised for its individual task
- Two pairs of Line outputs to allow, for example, bi-amping
- 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
The MXP2000 is supplied with the Myryad System Remote Control handset which can also control Myryad CD players, Tuners and other Myryad products.
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| Anodised Black fascia with Black casing | Anodised Silver fascia with Silver-Grey casing |
The selected input signal is routed via the input and tape monitor relays (all with gold-plated contacts) to the input amplifier (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 amplifier 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.
Inputs: | Line direct, Tape, CD-R, CD, Tuner, TV, DVD, Aux |
Line input sensitivity (ref. 1V output): | 360mV (user trimmable 180-720mV) |
THD (1kHz, 1V output): | 0.003% typical |
Signal/Noise ratio (A weighted, ref. 1V) | >100dB |
Frequency response (20Hz - 20kHz) | ±0.2dB (-1dB @ 96kHz) |
Input impedance | 22 kΩ // 200pF |
Maximum output: | >8Vrms |
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Physical Specification |
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Dimensions (width x height x depth) | 436 x 95 x 343mm |
Weight, Net. | 7.0 kg |
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Fascia | 9mm thick bead-blasted aluminium anodised with silver or black finish |
MXA2080 Stereo Power Amplifier
Introduction
Specification
The MXA2080 Power Amplifier delivers 80 watts per channel of high quality sound in an attractive Myryad MX Series package.
The MXA2080 features:
The MXA2080 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
- Each channel has a line-out connector allowing easy “daisy-chaining” for bi-amping, tri-amping or multi-room applications
- Distinctive elliptical Standby touch switch
- LED indication of standby state
- Additional LEDs indicate fault condition if amplifier protection is activated
- Myryad “Smart My-Link®” for intelligent system operation with other Myryad products
- Optically isolated remote DC trigger control input/output for standby switching
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| Anodised Black fascia with Black casing | Anodised Silver fascia with Silver-Grey casing |
The MXA2080 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 MXA2080’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% |
Signal/Noise ratio (A weighted, ref. 80W) | >116dB |
Frequency response (20Hz - 20kHz) | ±0.2dB (-2dB @ 96kHz) |
Input sensitivity (ref. 80W output): | 900mV |
Input impedance | 60 kW // 440pF |
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Physical Specification |
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Dimensions (width x height x depth) | 436 x 95 x 355mm |
Weight, Net. | 10.2 kg |
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Fascia | 9mm thick bead-blasted aluminium anodised with silver or black finish |
MXA2150 Stereo Power Amplifier
Introduction
Technical
Specification
The MXA2150 Power Amplifier delivers 150 watts per channel of high quality sound in an attractive Myryad MX Series package.
The MXA2150 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
- Each channel has a line-out connector allowing easy “daisy-chaining” for bi-amping, tri-amping or multi-room applications
- Distinctive elliptical Standby touch switch
- LED indication of standby state
- Additional LEDs indicate fault condition if amplifier protection is activated
- Myryad “Smart My-Link®” for intelligent system operation with other Myryad products
- Optically isolated remote DC trigger control input/output for standby switching
- Balanced input version of available to special order
Finish
| Anodised Black fascia with Black casing | Anodised Silver fascia with Silver-Grey casing |
The MXA2150 has two totally separate amplifier modules, each with its own dedicated power transformer. The 3.4kg toroidal power transformer feeds directly through ultra-fast rectifiers to 20,000µF of reservoir capacitors – produced by paralleled smaller capacitors to keep the supplies’ resistance and inductance as low as possible. In addition high-speed film capacitors are wired across the reservoirs to maintain low impedance at high frequencies. This impressive 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 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 a total of four 150W, 230V output transistors. The combination of these output devices and the generously rated power supply results in a peak output current in the region of ±75 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 relay contacts only have a very small effect on the signal, but even this is removed by connecting the relay within the amplifier’s main feedback loop. The MX 150W amplifier uses an ultra-stable Vishay bulk-foil resistor (temperature coefficient <4ppm/˚C) for its 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: | 150W |
4W: | 230W |
THD (@80% rated power, 8W 20Hz-20kHz): | 0.02% |
Signal/Noise ratio (A weighted, ref. 150W) | >118dB |
Frequency response (20Hz - 20kHz) | ±0.2dB (-2dB @ 96kHz) |
Input sensitivity (ref. 150W): | 1.23V |
Input impedance | 20 kW // 440pF |
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Physical Specification |
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Dimensions (width x height x depth) | 436 x 190 x 479mm |
Weight, Net. | 21.0 kg |
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Fascia | 9mm thick bead-blasted aluminium anodised with silver or black finish |