2024 Split Power Amplifier Supply Silver Edition FM266mk2 Balanced Single Ended Preamplifier SNR 100DB 110/240V

2024 Silver Edition FM266MMK2 Pre:

SP8W Silver Bull Plus Sinking Silver Board 266PCB, Sinking Silver PCB Module, Sinking Silver Board Super Power Supply Parallel Stabilization, All PCBs use 6% silver solder. The power supply, the pre main channel power channel wire uses a 1m pure silver wire, and the connecting wire between the pre and the power supply is 1m long. Similarly, the main channel uses 3 1m long 1.0mm pure silver wires for power transmission.

There are two types of input backboards for the chassis

1: Six sets of pre XLR fully balanced inputs, two sets of fully balanced XLR outputs, recording cassette devices default to one set of balanced inputs and one set of balanced outputs

2: One set of RCA input, five sets of XLR balanced input, one set of RCA output, one set of balanced XLR output, default recording device with one set of balanced XLR input and one set of balanced XLR output

The complete set of imported switches is of the same brand as the original factory. The Japanese APS balance potentiometer has remote power on function, mute function, volume control function, and is equipped with an all aluminum remote control.

Adopting German prototype capacitor components, Philips resistors, German ER0 capacitors, $P customized audio electrolysis, original transistor, original diode, and original brand silver plated switches.

According to the original factory website, the reason why FM266 did not need to be upgraded is because it was designed to cover all aspects from the beginning, and only unilateral or small upgrades would not have much effect. Therefore, FM266-MKII has only been launched now.

FM266II has undergone a brand new transformation in terms of output and input modules. In the input section, FM66MKII is equipped with a newly developed module, model 19510A, based on a pure A-class fully balanced circuit architecture. Its main function is not only to match the front-end signal source, but also to filter out all unnecessary noise. The output end uses a 19200 module, which is also a fully balanced circuit with no negative feedback design, and has excellent driving capability. Any post stage or high impedance wire can be well matched. Interestingly, the balanced input of FM266-MKII is equipped with a newly designed pure impedance attenuator. What is the purpose of this? Because modern high-level sources, especially those with balanced outputs, have excessively high voltage levels that not only cause overload in the input stage, but also often leave the volume knob of the front stage in the lowest position, which is usually not linear enough. But FM266-MKII can maintain the appropriate volume at the most linear 1 o'clock position during listening by appropriately attenuating the level of the signal source through an attenuator.

In addition, the FM266MKII can also adjust the total gain of the machine internally to achieve the most suitable level of gain for the entire system, thereby obtaining the most balanced and excellent sound performance.

In addition, the FM66MKII can also adjust the overall performance of the machine internally to achieve the most suitable level of performance for the entire system, resulting in the most balanced and excellent sound performance.

FM acoustic performance:

The new FM266MK2 module has super strong amplification capability and an astonishing suppression level of over 100DB for common mode signals, which is 100 to 1000 times superior to many other brands of fully balanced amplifiers

Some minor interferences can be eliminated, and the music background is quite clean.

The parameter of common mode rejection ratio is not achieved through simple operational amplifiers, but relies on precise pairing and tuning of components. Ensure high resolution of FM amplifier. The manufacturer has achieved a common mode rejection ratio that does not exclude cheap operational amplifiers, which can be individually fine tuned to ensure the stability of discrete circuits

Precautions to be taken:

FM266MK2 is the default European standard input (1 ground 2 negative 3 positive). When the audio signal is American standard input (1 ground 2 positive 3 negative), the phase switch button on the panel. When not pressed, the balanced output is (1 ground 2 positive 3 negative) American standard, and when pressed, the balanced output socket is (1 ground 2 negative 3 positive) European standard. AS (American standard) and ES (European standard) are printed on the panel, and a schematic diagram of the European standard interface is printed on the back panel of the chassis.

The whole machine adopts ten fully copper plated 24K gold buttons and two fully copper plated high gloss knobs:

The complete set of balance seats for the MK2 replica is made of the Nutrick brand and the British RC (this version is a power split with pre power pair wiring, without a 220V power cord).

The chassis process dimensions are the same as the original machine. The panel is made of 6mm thick aluminum plate, the side panel is 10mm, the back panel is 4mm, and the thickness of the upper and lower cover plates is 2mm

When we look from the front of the machine from left to right, the six buttons on the far left are six sets of balanced XLR switches, in to recording and pre switch buttons, mono function switch button, (European and American standard output phase switch) button, attenuation-20DB function button, stereo left and right channel volume balance adjustment knob, overall volume control knob for the whole machine size

1: Gain/maximum input/level/input impedance: 20DB/9V/67-100-150 Keiomega

2: Maximum output level/recommended load impedance: 19.5V/6000mu

3:

(Input phase line, stereo): Balanced (European XLR) × 5, single ended (RCA) X1 (rear panel one)

(Input phase line, stereo): Balanced (European XLR) × 7, (Rear panel 2)

4: Audio cassette player amplification function interface, input, output

5: Output (stereo): Balanced (XLR) X1 Single ended RCAX1 (rear panel 1)

Balance (XLR) X2 Single End RCAX0 (Back Panel 1)

6: Power: 100V/240VAC, 50/60Hz

7: Power consumption: 12W

8: Outline dimensions: 446WX90HX262Dmm

9: Machine weight: 22kg (set)

THD+N distortion is 0.0024% as measured

Sex to noise ratio: 1000B