HI END FM255 Audiophile Preamp Transistor Amplifier, Fully Balanced HiFi Preamp

Description: The new version has actually been on sale for a few months, and there has been no time to explain it specifically. The new version has changed the wiring and grounding, upgraded the components, and greatly reduced the noise floor and interference. And I invited my good friend, the worker, to help us re-do the accurate tuning together, modified several unreasonable parts of the original design, and greatly improved the materials used. We strive to be infinitely close to the sound level of the original machine. The majority of enthusiasts can buy with confidence. (June 6, 2019)

Introduction to Reproduction

1Completely decrypt the internal structure of the black box, through precisionDisassemble, dissolve, scan and replicate, so that the most essential part of the front stage is displayed, and it is paired through strict instrument testing.

2: Transformer imported porcupines, levels, and backgrounds are better than domestic A-core cattle

3: HIFI-level sound comparable to the original machine

4: The circuit of the whole machine is directly engraved, and the material is also infinitely close to the original machine. Keep the noble and elegant sound quality of the original machine.

5: The biggest feature of FM255 sound is a strong sense of air, and the on-site positioning is very accurate, as if you are there, and the feeling of leaving the box is obvious. Try to restore the on-site feeling to the greatest extent.

Introduction to FM255 pre-level functions

   This front stage has 2 sets of balanced, 3 sets of RCA single-ended inputs, tape input and output are not enabled, 1 set of balanced outputs - default Euro-Japanese standard output, press American standard output, with single-ended RCA output.

Panel function introduction The 5 buttons from the left are 2 sets of balance and 3 sets of single-ended RCA input switching. Output balance phase switching, mono monitoring, tape input channel (not enabled), attenuation 20dB function, left and right channel balance adjustment knob, total volume control knob.

Introduction to FM Acoustics:

The price of the original machine is ridiculously expensive because of this guy. A senior player once said such a memorable sentence: "If the price of Krell, Cello and other equipment is unreasonable, then the price of FM is simply unreasonable!

FM-255 listens to fever music as follows:

   The sound is pure, the articulation is clear, and it's very natural. Listening to the symphony will make you feel immersive. It's very coherent, dynamic, and breathtaking. It's enough to stand out from the crowd! Listening to classical music, crystal clear, exquisite, and transparent sound, full of cultural atmosphere. Because of its pure, natural, balanced tone, there is no cheating. It can make your system completely feel that the sound is coming from the speakers.

Input and output fully balanced line preamplifier
● Gain/maximum input level/input impedance: 20DB/9V/67-100-150Keiomega
● Maximum output level/recommended load impedance: 19.5V/600Omu
● (Phase Line, Stereo): Balanced (XLR) × 2, Single Ended (RCA) X3
● With input and output (stereo): single-ended (RCA) X1
Output (Stereo): Balanced (XLR) X1 with single-ended output option

● Frequency response: 20HZ-40KHZ

● Power: 30W AC, 110/220V 50/60Hz
● Power consumption: 10W
Size: Silver 430 W × 66 H × 263 D mm Gold 443 W × 66 H × 263 D mm

● Weight: 6.2kg with packaging

Introduction to the same layout function as the front panel of the 2 versions

Backplane layout and function port introduction

Appreciation of the aging test of the whole machine for bulk orders by foreign agents

Detail map All components are "carefully selected and precisely paired" to ensure accurate and first-class sound!!

Audiophile-grade audio array capacitors keep the large dynamic voltage supply sufficient, and the sound is as stable as Mount Tai!

Gold-plated balanced ports and pure copper-plated RAC output seats maintain good electrical conductivity and clear sound details

Product after-sales instructions:

   There is no self-dismantling of the mill, and in the case of non-human misoperation, the whole machine is guaranteed for two years free of charge, and the freight for maintenance during the warranty period is paid for one journey each; (please keep the specially customized packaging box) to facilitate after-sales transportation. After the warranty period, our company only charges the material fee (round-trip freight needs to be borne by the buyer).

Transformer introduction

The whole machine uses NORATEL transformers. NORATEL transformers (Porcupine) is a world-leading audio high-quality toroidal transformer company. It has 80 years of audio transformer design and manufacturing technology. The transformers it produces have long been well-known in the HI-FI audio industry and have been recognized in the international high-end audio industry. We have opened many international famous machines, and you will see many NORATEL transformers.

The transformer is an audio-specific power transformer, produced by the original factory in Sri Lanka, brand new and imported, absolutely genuine, buy with confidence. The Sri Lankan factory is a factory specializing in the production of toroidal transformers by Noratel, which guarantees original and genuine products. The sound effect is by no means comparable to that of domestic manufacturers. The UK is the design management department, and the best factory of Huanniu is in Sri Lanka. Please don't think that it is not from the UK, just like Apple mobile phones and Foxconn OEM in China. Developed countries will not produce these, and labor costs are high.