Description
# FM255 MKII Balanced Preamplifier with Integrated Phono Stage
## High-End Audio Engineering Inspired by FM Acoustics
**A meticulously engineered FM255 MKII reproduction, designed for audiophiles who demand exceptional musicality, precision, and high-end performance.**
### Payment and Shipping
**PayPal:** A 7% transaction fee applies to PayPal payments. This advertised price already includes the PayPal transaction fee and shipping costs for the unit.
Bank transfer and other supported payment methods, including Alipay and WeChat Pay, are also available.
## 1. Authentic-Inspired Construction and Premium Components
The FM255 MKII is a carefully developed reproduction inspired by the original FM Acoustics design. It combines extensive circuit analysis, detailed component matching, and meticulous construction to achieve a high level of similarity to the original unit.
Key features include:
- Original-style transformer with matching identification number.
- Silver-plated switches.
- Original-specification power supply.
- Original-style EL capacitors.
- Nichicon electrolytic capacitors.
- Original-type transistors and audio modules.
- A meticulously reproduced main circuit board, following a 1:1 layout approach.
- Solid copper control knobs.
- Approximately 95% visual similarity to the original, according to the manufacturer.
The integrated chassis design accommodates the preamplifier circuitry and power supply in one unit, with the power cable connected directly to the rear panel.
## 2. Advanced Circuit Design and Sound Quality
This version of the FM255 MKII incorporates substantial improvements over the first-generation reproduction.
The circuit-board layout and signal routing have been refined to address weaknesses identified in the earlier version. Internal construction has also been optimized, with particular attention to circuit architecture, component selection, and overall signal integrity.
The result is designed to deliver a quieter background, improved resolution, and a more refined musical presentation.
Rather than focusing solely on external appearance, this project emphasizes internal engineering, component quality, and careful implementation.
### The Sound: Refined, Natural, and Highly Resolving
The manufacturer’s listening description highlights the following characteristics:
**Vocals**
- Fine tonal texture and excellent intelligibility.
- Natural, lifelike imaging.
- A transparent and open presentation.
- A slightly rich, smooth tonal character without sacrificing clarity.
**Orchestral and large-scale music**
- A convincing sense of scale and presence.
- Excellent musical coherence and dynamic impact.
- Precise instrument placement and separation.
- A spacious presentation that helps recreate the atmosphere of a live performance.
**Classical music**
- Delicate detail and refined tonal textures.
- Exceptional clarity and transparency.
- A clean, articulate presentation that reveals subtle musical information.
Designed for a wide range of music, from intimate vocal recordings to demanding orchestral works, the FM255 MKII aims to combine resolution, musicality, and an engaging listening experience.
*These sound descriptions reflect the manufacturer’s design goals and listening impressions; individual results will depend on the associated audio system.*
## 3. Extensive Circuit Research and Audio Module Reproduction
According to the manufacturer, the development process began with an opportunity to examine an original FM255 MKII unit.
Particular attention was paid to the audio modules, which were carefully disassembled and analyzed to investigate their internal circuit architecture, component selection, and operating parameters.
High-resolution scanning and detailed circuit reproduction techniques were used to recreate the module design as accurately as possible.
The manufacturer states that this in-depth work distinguishes its reproduction from other versions on the market, with the goal of achieving greater accuracy and a sound closer to the original.
The circuit board and internal construction were also reproduced with attention to layout, materials, manufacturing quality, and component matching.
Where component matching is required, components are tested using precision instruments to achieve closely matched operating parameters.
The overall objective is to reproduce the original design’s key sonic qualities while incorporating improvements developed during the reproduction process.
## 4. Comprehensive Connectivity and Versatile Operation
The FM255 MKII offers an extensive range of inputs and outputs for integration into a high-end audio system.
**Inputs**
- 2 × balanced XLR inputs.
- 3 × single-ended RCA line inputs.
- 1 × RCA direct-input connection, corresponding to the front-panel STRAIGHT IN function.
- 1 × RCA phono input for a turntable cartridge.
**Outputs**
- 1 × balanced XLR stereo output.
- 1 × single-ended RCA stereo output.
### Balanced XLR Compatibility: European and American Pin Configurations
The two balanced XLR inputs use the European pin configuration by default:
- Pin 1: Ground
- Pin 2: Cold (−)
- Pin 3: Hot (+)
For sources using the American configuration:
- Pin 1: Ground
- Pin 2: Hot (+)
- Pin 3: Cold (−)
The front-panel **PHASE INV.** switch allows the output pin configuration to be changed when required. With a balanced source, the switch can be used to accommodate the corresponding pin convention and maintain the intended signal polarity.
When using the single-ended RCA inputs, the XLR and RCA outputs follow the manufacturer’s specified American-style XLR output configuration.
### Additional Operating Functions
**STRAIGHT IN:** Provides direct signal routing through the dedicated rear-panel RCA input.
**PHONO:** Selects the dedicated phono input for connecting a turntable.
**MONO:** Combines the input signal into mono output operation. Only one input connection is required for this function. The manufacturer also describes using two preamplifiers in a mono configuration for specialized system arrangements.
**−20 dB attenuation:** Reduces signal level when additional attenuation is required.
**Stereo balance control:** Allows adjustment of the relative left and right channel levels.
**Master volume control:** Provides overall listening-level adjustment.
**Power switch:** Located on the right-hand side of the front panel.
## 5. Technical Specifications
| Specification | Details |
| ————————– | ——————————————————— |
| Model | FM255 MKII |
| Product type | Balanced stereo preamplifier with phono stage |
| Voltage gain | 20 dB |
| Maximum input level | 9 V |
| Input impedance | 67 kΩ / 100 kΩ / 150 kΩ, as specified by the manufacturer |
| Maximum output level | 19.5 V |
| Recommended load impedance | 600 Ω |
| Balanced inputs | 2 × XLR |
| Single-ended inputs | 3 × RCA line inputs |
| Additional inputs | 1 × RCA direct input; 1 × RCA phono input |
| Outputs | 1 × XLR stereo; 1 × RCA stereo |
| Power supply | AC 100–240 V, 50/60 Hz |
| Power consumption | 8 W |
| Dimensions (W × H × D) | 446 × 76 × 260 mm |
| Weight | Approximately 9 kg |
*Specifications are based on information supplied by the manufacturer. Please confirm the precise impedance options and phono-stage specifications before purchase.*
## 6. Inspired by a Legendary Name in High-End Audio
FM Acoustics has long been associated with the uppermost tier of the high-end audio market, where engineering, precision, and musical reproduction take priority.
The FM255 MKII reproduction was developed for enthusiasts attracted to this design philosophy and seeking an alternative way to explore its approach to preamplifier performance.
Its combination of balanced connectivity, extensive functionality, refined internal construction, and carefully reproduced circuitry makes it an interesting option for a dedicated high-end audio system.
For listeners who value natural vocals, convincing soundstage depth, precise imaging, dynamic expression, and fine musical detail, this preamplifier is designed to deliver an engaging and immersive listening experience.
## 7. After-Sales Service and Warranty
The manufacturer offers long-term maintenance support and upgrade services, subject to the stated conditions.
**First year**
- One-year free warranty for the complete unit.
- During the first six months, shipping costs are covered by the manufacturer.
- From month seven through month twelve, shipping costs are shared equally between the buyer and the manufacturer.
**After the first year**
- In the second year, the buyer pays shipping costs; no additional repair labor fee is charged, according to the manufacturer’s policy.
- After two years, the buyer pays shipping costs and the cost of replacement components. No additional repair labor fee is charged.
The warranty and service arrangements do not cover unauthorized disassembly, modifications, or damage caused by improper operation, as specified by the manufacturer.
Please retain the original custom shipping crate and packaging for safe transportation during any future service.
## A Serious Preamplifier for the Dedicated Audiophile
The FM255 MKII combines an ambitious reproduction of a renowned high-end preamplifier concept with extensive connectivity, carefully selected components, and a strong focus on musical performance.
**If you are looking for a preamplifier that aims to combine natural tonal richness, transparency, precise imaging, dynamic expression, and refined detail, the FM255 MKII deserves your consideration.**
Contact the seller for the current price, payment options, availability, and shipping arrangements.
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