Micro Precision Z-Studio Z-ST 4c 4-Channel Amplifier

$9,999.00

Micro Precision Z-ST 4c: a 4-channel, top-of-the-line amplifier with 160W/280W power at 4/2 Ohm, discrete circuitry, adjustable bias, and passive cooling. Features linear phase/amplitude and low-noise design for precise audio clarity.

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Micro Precision 7-Series Mono Amplifier

Uncompromising Quality.

The Micro Precision 7-Series Mono Amplifier, a marvel in audio technology, blends technical sophistication with a sleek, user-centric design. Designed for the audiophile seeking unparalleled sound quality, this amplifier incorporates advanced engineering principles to deliver exceptional audio performance.

Features&
Specifications.

We strive to bring you the cutting edge in automotive technology. 

Thomas: Overall Concept

Roberto: Development & Production

Colpo: Development & Production

Licio: Administration

Cemil: Morale and Advice

. “Form follows function.”

. Designed for repairability even after 20 years.

. Avoidance of SMD components to facilitate easier repairs.

. Recognition of the significant influence of an amplifier as a necessary technical construction.

. Not an ideological lifestyle product.

. Three 30 Ampere primary fuses (90A).

. Eight 80 Ampere switching transistors (2x240A).

. Eight high-speed switching diodes to minimize switching noise.

. Two high-current filter chokes to reduce disturbances from switching frequencies.

. Four primary 22,000 uF storage capacitors from the MUNDORF range.

. Eight secondary 4,700uF storage capacitors from the MUNDORF range.

. Various necessary voltages generated by the power supply.

.  +5 Volts for the microcontroller and reference for regulation.

.  +12 Volts for relay switching.

. +/- 15 Volts level control.

. +/- 67 Volts bias.

. +/- 47 Volts pre-stage / driver stage.

. +/- 40 Volts power amplifier.

. High-voltage technology in discrete circuitry.

. No operational amplifiers (IC) in the signal path.

. Only high-impedance FET-transistor built OP amplifiers.

. Bias adjustable via precision potentiometer.

. AUDIONOTE KAISEI coupling capacitors.

. Sanken transistors, four pieces at 160 Watts per channel.

. CADDOCK 1% precision emitter resistors, 16 pieces.

. PANASONIC high-current relays for speaker on/off.

. High-quality speaker screw terminals with 4mm banana through cable optimally connected to the board. No losses on conductor tracks.

 

. Bridgeable from 4-channel to 2-channel.

. Bridgeable from 4-channel to 2+1 channel.

. LED control indicator for sequential bridging operation.

. Input level adjustable via programmable resistance matrix in 0.5 dB steps.

. No problematic potentiometers in the signal path.

. No filter functions in this amplifier. Linear phase & amplitude.

. High-impedance FET transistor input stage to minimize unnecessary load on the signal source.

. 20.0 kOhm constant input resistance regardless of level control.

. Input capacitance 5pF.

. Input stage coupling capacitors: AUDIONOTE KAISEI & MUNDORF MCAP EVO.

. Optional amplifier without resistance network for a “direct input” without level control.

. Displays operating voltage (min. 9.0V – max. 16.0 Volt) and working temperature.

. Displays channel-related level reduction (channels 1-4).

. Overheating: Programmable 85 degrees via microcontroller.

. Overload; Short circuit.

. Undervoltage: Shutdown at 10V, which can be disabled via the controller.

. Temperature: Around 45 Celsius in normal operation with passive cooling. No fan needed due to large heatsink and side panels. Shutdown at 85 degrees Celsius.

. 325 x 550 x 90mm.

. Total: 5 Amperes = 4 channels at 1.25 Amperes each.

. The idle current depends on the bias pre-setting, affecting harmonic (K2) or unharmonic (K3) distortion. The bias influences sound, idle current, and operating temperature.

. Self-noise: A-weighted -90dBV.

. Frequency response: 5 – 250,000 Hz at -1dBV, 5 – 420,000 Hz at -3dBV.

. Power at 4 Ohm load: 160 Watts at 1% THD+N.

. Power at 2 Ohm load: 280 Watts at 1% THD+N.

. Power at 4 Ohm BR: 580 Watts at 1% THD+N.

. Power at 2 Ohm BR: Not permissible.

. Damping factor at 10W: 2700.

. DC Offset

Z-Studio 170 Updates:

The Z-Studio 170 has seen several updates to enhance its performance further:

September 2011: Introduction of a new surround geometry, reducing mechanical resistance.
November 2013: Inclusion of a new spider and voice coil, lowering mechanical resistance due to these new components and geometry. The QTC was adjusted to 0.7, with updated parameters available on page 3.
December 2015: A revamped magnet system with internal triple shielding, improved venting, and a new visual design for the backside.
November 2019: Introduction of a new basket construction, enhancing the overall structural integrity and performance.
This product embodies Micro Precision’s commitment to innovation and quality in audio technology, making the Z-Studio 170 an ideal choice for audiophiles seeking top-tier midbass performance.