Nakamichi FDSD370 DSP player

Name: Nakamichi FDSD370 DSP player
Brand: Nakamichi
Price: 427.60 EUR
Availability: InStock

DSD player with DSP processor and amplifier, 4 × 40 W RMS, 4 × High Level input, 8 × RCA outputs (6 V), optical and coaxial input, Bluetooth 5.3, USB and OTG, class D
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Nakamichi FDSD270In stock (6 pcs) 427,60 EUR

Nakamichi FDSD370In stock (6 pcs) 571,60 EUR

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DSP player Nakamichi FDSD270

The Nakamichi FIDELA FDSD270 represents a completely new generation of devices for car audio that combines an 8-channel DSP processor, a 4-channel class D amplifier and an integrated Hi-Res DSD player in a single compact chassis. It can therefore act as a complete audio system center – from music playback through its digital processing to powering the speakers. The built-in amplifier delivers 4 × 40 W RMS at 4 Ω, while the 8 RCA outputs with up to 6 V allow easy connection of external amplifiers for even more demanding active setups.

Music can be played directly from a USB flash drive, external drive, mobile phone via OTG, Bluetooth 5.3 or digital optical and coaxial inputs, so you don't need to rely on the quality of the built-in head unit. The player supports Hi-Res formats including DSD64, DSD128, FLAC, WAV, APE, AAC and MP3, with USB media up to 512 GB and external drives up to 2 TB.

The powerful DSP processor offers a 31-band equalizer for each output channel, time corrections up to 20 ms, smooth phase adjustment, professional active crossovers Butterworth, Bessel and Linkwitz-Riley with slopes up to 48 dB/oct and the ability to save six user sound profiles. All settings can be conveniently made via computer or the FDSD Series mobile app.

Fidela - Nakamichi's top series

Fidela represents Nakamichi's top class, combining the brand's rich history with modern technologies and precise workmanship. Originally, the Fidela name was associated with high-end tape recorders in the 1960s, known for their innovative mechanisms and unmistakable sound. Today the Fidela brand focuses on car amplifiers and DSP processors that use top components for maximum sound quality. Among the key features of Fidela amplifiers are the use of very high-quality components, perfect workmanship and premium design. Thanks to these features, Fidela amplifiers are an ideal choice for demanding users seeking high sound quality and extensive customization options in the automotive environment.

Integrated 10-channel DSP processor

Inside the device you will find quality components such as WIMA and ELNA capacitors, OPA1678 operational amplifiers and Toshiba chips operating in class AB. The DSP processor is built on the AK7735 chip from Asahi Kasei and high-quality PCM3168 circuits handle digital-to-analog conversion. The DSP offers a 31-band equalizer for each channel with 1 Hz resolution, time delay capability up to 25 ms, phase control and a selection of professional crossover types such as Butterworth, Bessel or Linkwitz-Riley. The output signal is fully tunable including gain and Q settings. A stable and extensive PC tuning software is of course provided, as well as an intuitive mobile app for phone-based setup. Thanks to low distortion (≤0.05%) and high signal-to-noise ratio (≥98 dB), the resulting sound is precise and faithful, suitable even for demanding installations.

Main features

Combination of an 8-channel DSP processor, amplifier and Hi-Res DSD player.
Amplifier power 4 × 40 W RMS at 4 Ω.
4 high-level inputs.
8 RCA outputs with 6 V.
Built-in Hi-Res player supporting DSD64 and DSD128.
Supports FLAC, WAV, APE, AAC and MP3 formats.
Bluetooth 5.3 for wireless music playback.
USB, OTG, optical and coaxial digital input.
Supports USB drives up to 512 GB and external drives up to 2 TB.
31-band equalizer for each output channel.
Time corrections up to 20 ms.
Smooth phase adjustment.
Active Butterworth, Bessel and Linkwitz-Riley crossovers with slopes up to 48 dB/oct.
Save up to 6 user sound profiles.
Setup via PC software or the FDSD Series mobile app.

About the brand

The history of the Nakamichi brand dates back to 1948 when it was founded in Japan by Etsuro Nakamichi. His journey began with the establishment of the Nakamichi Research Corporation in Tokyo, focused on sonar research, magnets and development solutions for leading brands, government institutions and universities. From the beginning the brand built on a scientific approach, deep understanding of sound and emphasis on technical precision. A pivotal period of growth came in 1972 when Takeshi Nakamichi joined the company and significantly contributed to the development of legendary audio products sold worldwide. Under his leadership products such as the Nakamichi 1000 — the world's first cassette deck — were developed. Thanks to the combination of top sound and timeless design, to which lead engineer Kozo Kobayashi also contributed, Nakamichi products became icons of their time. The Nakamichi brand remains successful today. Its portfolio offers high-quality products for home and car audio that stand out with thoughtful construction, quality workmanship and excellent sound within their price category.

Catalog number	FDSD270
Brand	Nakamichi
Links	Official web presentation
Energy class of the amplifierAmplifiers are divided into two basic classes: analog and digital . Analog amplifiers (A/B) have higher consumption requirements, but usually have a more natural sound. Digital amplifiers (D) have significantly lower consumption and higher efficiency, but the sound may not be as faithful as with classic analog amplifiers.	D
Number of amplifier channelsAmplifiers are divided into: - Monoblocks - 2-channel - 3-channel - 4-channel - 5-channel - 6-channel - multi-channel Each channel is used to power one speaker for the coaxial type, or one side if they are component speakers. Monoblock type amplifiers are mainly used for subwoofers. 2-channel are suitable for both subwoofers and, for example, the front pair of speakers in a car. 3-channel is used for front or rear speakers + subwoofer. 4-channel are used for front + rear speakers or 1 pair of speakers + subwoofer. 6 or 5-channel are used for 2 pairs of speakers + subwoofer, most often. Bridging means connecting the amplifier to a bridge, using the + pole from one channel and the - pole from the other channel. In most cases this is shown as "BRIDGED" on the amplifier.	4
RMS power into 4 ΩRMS power when loading speakers or subwoofer at 4 Ω. RMS power is the constant power of the amplifier and is one of the most important parameters when choosing an amplifier.	4 × 40 W
Frequency rangeThe ability of the amplifier to reproduce the signal from the lowest frequency to the highest = faithfully reproduce the sound in a specific frequency band. Professionally: In the frequency range from 40 to 16,000 Hz, the vast majority of fundamental and overtones (harmonics) of all musical instruments are found. We are interested in the course of the radiated sound pressure in this range of frequencies when the loudspeaker system is supplied with constant power. We call this course the frequency characteristic, which tells us the level of radiated sound pressure in decibels (dB) depending on the frequency. The frequency characteristic of a speaker or speaker system can be expressed most succinctly with a graph. Mostly, however, the frequency characteristic is indicated by indicating the maximum tolerance of the sound pressure in the given frequency range, e.g. 50 to 15,000 Hz -+ 6 dB. Since the frequency characteristics of loudspeakers and systems in general are quite uneven, some manufacturers do not even specify this maximum tolerance of sound pressure in decibels in their catalogs for reasons of prestige. Data impoverished in this way is unfortunately worthless. What is valid is that the manufacturer offers a speaker system with a frequency range of 30 to 20,000 Hz, if he is worried about stating the maximum unevenness of the sound pressure in this range, because he can have a tolerance of, for example, +- 20 dB. The unevenness or undulation of the frequency curve in good speaker systems for high-quality music performance should not exceed +-3 dB in the 80 to 12,000 Hz band and +-6 dB in the 40 to 16,000 Hz band. Greater unevenness already depletes or emphasizes certain tonal areas, which can cause audible or even disturbing distortion. The proportion between fundamental tones and higher harmonics also changes, thereby changing the color of the sound, and individual musical instruments as well as the entire musical image sound unnatural.	20 - 30000 Hz
Signal-to-noise ratioThe signal-to-noise ratio means that the output signal always contains noise. The signal-to-noise ratio expresses how much of this noise is compared to the useful signal. The so-called A value is given, which does not take deep and very high frequencies into account. This corresponds to the characteristic of human hearing, which is not so sensitive to deep frequencies, especially below 1 kHz. The higher the value, the better the amplifier is.	> 95 dB
Inputs	2 x RCA, 4 x high-level, optical, coaxial
Outputs	8 x RCA
High level inputsThe high-level input on the amplifier allows connection directly to the existing speakers in the car without additional purchase of an external high/low adapter. Important equipment in the case of installing an amplifier on an original car radio.	Yes
Automatic on and offThis function allows you to automatically switch on the amplifier.	Yes
Integrated DSP processor	Yes
Number of DSP processor channels	8
Output equalizer	31 bands
Filters	HPF, LPF, All pass
Input for wired remote controlIf the amplifier has a remote control input.	Yes - Nakamichi AC6
Dimensions of the amplifier	165 x 124 x 48 mm
Mass	1.3 Kg