Kinki Studio EX-M1+ - dual mono integrated amplifier (silver)

Kinki Studio EX-M1+ - dual mono integrated amplifier (black)

"The true universal integrated amp, period".
This is the design aim of the new EX-M1+. The answer for many of our customers who were looking for an End Game integrated amp with preamp output, home theater bypass input, fully dimmable display.

Features:

• Volume control based on JRC MUSES 72320 resistor ladder with 100 steps increment
• Dual-mono design based on the British company Exicon Mosfet transistors - two pairs for one channel, fast and dynamic
• Two encapslated 400VA transformers from the British company AMPLIMO
• American Vishay BC capacitors (as a curiosity - the same Nagra uses in their products)
• Two separate low-noise transformers from the Czech manufacturer Talema, supplying preamplifier sections
• Gold-anodized aluminum heat sinks with drilled holes, we have the same holes in the lower housing as well as the upper, so the amplifier has free air flow
• Extremely high cost 0.2µm gold-plated printed circuit board (PCB)
• Furutech FI-03 power socket
• Neutrik XLR sockets
• Internal copper cabling OCC, OKI Flat Ribbon and OMRON connectors (made in Japan)
• Gold-plated connectors for input stage signal and transformer primary stage
• Aluminum remote control with magnetic rear flap
  
• LED display with dimmable option and total blanking option.

POWER STAGE

The power amplification circuitry are mounted directly on a large customs made, gold anodized heat sink. The power stage equipped with two pairs of power EXICON MOSFETs, driven in Class AB.

Two identical power stage modules are arranged on the left and right sides of the chassis, deliver impeccable power for the two channels: 215 watts into 8 ohms, 400 watts into 4 ohms.

HIGH DAMPING FACTOR

High damping factor unleash the full potential of the sonic performance of the loudspeakers. EX-M1+ employes high power rail supplies, delivering fast and high recovery DC supply to the power stage. The ultra high slew rate and DC-coupled (no capacitors in the signal path), yielded exceptionally acoustic excellent - neutral, transparency, details, dynamic and ultra fast transient response.

PREAMP OUT, HT BYPASS
EX-M1+ is equipped with the most anticipated features - Preamp Output and HT Bypass. We did it differently though. The Preamp Output can be enabled/disabled by the completely redesigned Remote Control Unit. It allows you to use the EX-M1+ as a preamp only, or integrated amp where the preamp output can be connected to the subwoofer or to our monoblocks EX-B7 to biamp the loudspeakers.

The same goes to HT Bypass Input. A single press on the Remote Control Unit button enables the HT Bypass Input. The preamp stage is bypassed, EX-M1+ functions as a power amp.

1.1 Preamp Output
The preamp output can be enabled/disabled by using remote control. Modes:

OUT1: EX-M1+ as integrated amp

OUT2: EX-M1+ power amplifier stage defeated, it works as a preamp, output via the Preamp Output RCA jack

OUT1+2: EX-M1+ as integrated amp, and, preamp output activated. This is a nice feature for multiple speakers user to connect the preout to subwoofer, or, to an external amplifier output to biamp a pair of loudspeaker with the EX-M1+ amplifier output.


1.2 HT Bypass Amplifier Input
As the name suggested, with this input, you can use the EX-M1+ as a power amp. This feature can be enabled by the remote control.

Sound characteristics:
Neutrality and musicality were the goals to achieve. Rich tonal quality, vivid sound imaging, details, high resolution and dynamic. The choice of the components, design, and tuning does just that.

Technical specification:

Parameters:

• Frequency Response: 10-150kHz (±3dB)
• THDN: 0.0232%; 0.006% (A-Weighted)
• S/N Ratio: >103dB
• Output Power: 215W (8Ω), 400W (4Ω), Both channel driven
• Damping Factor: 2000
• Gain: Normal Gain 26 dB
• Max Output Voltage: 55VAC
• AC Power: 110/240VAC, 50/60Hz (Factory configure)

Input / Output:

• Input Sensitivity: 2.25Vrms - 3.6Vrms
• Input Impedance: 50kΩ
• Input Connector: RCA x 3, XLR x 1, HT BYPASS x 1
  
  
• Output: Speaker Binding Post 4mm L/R Channel
• Output: Preamp Output x 1
  
  

Dimension and weight:

• Dimension: 430 W x 125 H x 370D
• Weight: 25KG

Press reviews (EX-M1):