Amplifier with DSP processor Harmony HB 48 ADSP
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Amplifier with DSP processor Harmony HB 48 ADSP
Harmony presents a four-channel amplifier with an integrated DSP processor and an honest 4 x 35 W RMS output. The amplifier impresses with its small dimensions, quality workmanship, equipment and sound, which you would expect from significantly more expensive products. The Harmony HB 48 ADSP can also be used as a separate DSP processor and connect, for example, more powerful amplifiers. There is a very intuitive DSP processor program with a 31-band parametric equalizer as well as a mobile application for easy setup on a mobile phone. Bluetooth streaming and a built-in player with Hi-Res audio support and the ability to switch songs on the remote control will please you. A great product to significantly improve the sound and performance in your vehicle with easy integration into your existing system.
The main features of the Harmony HB 48 ADSP amplifier
- 4-channel amplifier with integrated DSP processor.
- Amplifier with a power of 4 x 35 W RMS.
- Possibility to use it as a separate DSP processor and connect a stronger amplifier.
- Inputs: 2 x low level (RCA), 4 x high level.
- Outputs: 8 x low level (RCA)
- 31-band parametric equalizer.
- Setting of bandpasses, time corrections or detailed equalizer.
- 5.1 Bluetooth for music streaming.
- Integrated player in the remote control with the ability to switch tracks.
- Intuitive mobile application for easy setup via smartphone.
About the Harmony brand
The Italian brand Harmony was born in the 80s together with the first home speakers produced by the Italian hi-end manufacturer ESB Audio. Car speaker production began in the 1990s with a wide range of products that combined high sound quality with a significantly lower price point than ESB Audio products. And that was the main mission of the Harmony brand - to provide a high standard of sound quality with faithful reproduction of the entire sound spectrum, superior processing and all this at a more affordable price. The same applies in 2022, when ESB Audio decided to create a new Harmony product line. This includes component and coaxial speakers, a subwoofer, subwoofers under the seat, and amplifiers with a DSP processor at a very affordable price are worth mentioning. More interesting high quality products will follow under the sophisticated control of parent company ESB Audio.
| Catalog number | HARMONY HB 48 ADSP |
| Brand | Harmony |
| Links | Official web presentation (English) |
| 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 |
| 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 |
| 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 x 35 W |
| RMS power into 1 ΩRMS power when the subwoofer is loaded at 1 Ω. RMS power is the constant power of the amplifier and is one of the most important parameters when choosing an amplifier. When connected to 1 Ω, significant heating of the amplifier may occur. | 4 x 70 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 - 20000 Hz |
| Harmonic Distortion (THD)Total harmonic distortion indicates how much the input signal is distorted in the amplifier. Distortions appear as overtones contained in the output signal. The proportion of originally absent parts of the signal is given as a percentage, typical values are between 0.001% and 0.5%. Distortion is measured in their power band. If it exceeds the limit of 0.7% from a certain power, it is the value of the output power of the given amplifier, from which it no longer plays without distortion and from which the distortion usually increases steeply, so that no further increase in power can be counted on. The lower the value, the better. | < 0,05 % |
| 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. | > 100 dB |
| 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. | Ano |
| Automatic on and offThis function allows you to automatically switch on the amplifier. | Ano |
| Dimensions of the amplifier | 160 x 115 x 45 mm |