First of all, about the price of this amplifier, I have been advised by Hervé Deletraz darTZeel (see the link below) who listened to its "amazing sound" in his show-room equiped with Klipsch-Horn stereo loudspeakers. It was a unique and wonderful experience in my life! Entirely assembled by hand forever, famous Swiss artisanal and audiophile audio high-end class AB mosfet power amplifier since 2016, actually at the version 4.0. Three audio same channels provide up to 392 [WRMS] total continuous power for up to a 2.1 audio system, e.g. for a home living room, a small to medium office or a recording's studio. Each channel can support up to continuous 242 [WRMS] power on a 4 [Ω] load at 1 [kHz] without saturation. All three cinch audio inputs impedance are 50 [kΩ]; so you shall use only low capacitance high quality coaxial shielded audio/video cables. All three outputs can accept minimum 4 [Ω] loudspeakers. The frequency response goes from 1,6 [Hz] to 40,1 [kHz] at – 3 [dB]. There are only two high power mosfet transistors per channel: N and P in push-pull configuration, for a better sound's robustness, purity, power, accuracy and warmth. Inside the amplifier are 9 relays with 16 [A] gold contacts, to switch ON and OFF the device. There is a digital temperature sensor with 0,1 [°K] precision inside the heatsink; its value can be read remotely, thanks to the LAN connection which accepts a "COM over LAN" Fixmebus protocol. In case of heatsink's overtemperature, the amplifier stops above a predefined "maximum temperature", and starts again below a "minimum temperature", which are stored in the PIC18F46K22's EEPROM and are user's defined. The LAN remote control is provided by a Moxa MiiNePort E1 located on the top back side horizontal board of the amplifier. Big gold red and black loudspeaker connectors from USA, which accept large wires or banana plugs for the three channels outputs, are located on the front pannel.


CHF4999 

Learn More


Please visit Hervé Deletraz's darTZeel Swiss Audio Engineering here, one of my Swiss mentors in electronics.

TSIC306 temperature sensor

ZACwire PWM temperature sensor's protocol

Moxa Miineport E1





Number of audio channels
3
Maximum power per channel
242 [WRMS] at 1 [KHz] sinus
Total audio power
392 [WRMS], 78,5 [%] of 500 [VA], the class AB rendering percentage
Class
AB with mosfets
Output stage
One N and one P mosfets per channel in push-pull mode
Power rails voltage
+/- 60 [VDC]
Maximum power rails current
+/- 10 [ADC]
Main power supply
2x 40 [VAC] 500 [VA] toroïdal transformer
Total capacity on the main pow. rails
120'000 [μF] of "for Audio" capacitors
Auxiliary other power supplies
+/- 15 [VDC] and + 24 [VDC] from two AC/DC pow. sup., + 5 [VDC] and + 3,3 [VDC] from non isolated DC/DC
Minimum output impedance
4 [Ω]
Input impedance
50 [kΩ]
Frequency response
1,6 [Hz] to 40,1 [kHz] at – 3 [dB]
Signal to noise ratio
> 95 [dB]
Total harmonic distortion
< 0,05 [%] at 1 [W] 1 [kHz] sinus
Input sensivity
130,3 [mVRMS] at max. volume and 125 [WRMS] output
Output slew rate
22 [V/us]
Temperature sensor
TSIC306 with 0,1 [°K] precision from IST
Temperature sensor's protocol
ZACwire PWM signal
Remote control
Yes, COM over LAN with Fixmebus protocol and Moxa MiiNePort E1
Operating temperature
– 40 to +85 [°C]
Storage temperature
– 40 to +85 [°C]