Stereo Amplifier Class D TPA3251 2x140W 4 Ohm

Stereo Amplifier Class D TPA3251 2x140W 4 Ohm
This affordable Class D amplifier is based on a TOPA3251D2 amplifier chip, ensuring a power of 2x140W under 4Ω and this with high efficiency. It will therefore have no trouble accompanying most speaker models. Moreover, it takes advantage of the PurePath Ultra HD technology, allows to maintain a very low level of distortion on the whole frequency band, while offering a beautiful sound precision.

Average votes for this product
3.3 / 5

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Amplifier

Stereo Class D TPA3251 2x140W 4 Ohm

Amplificateur Stéréo Class D TPA3251 2x140W 4 Ohm

This affordable Class D amplifier is based on a TOPA3251D2 amplifier chip, ensuring a power of 2x140W under 4Ω and this with high efficiency. It will therefore have no trouble accompanying most speaker models. Moreover, it takes advantage of the PurePath Ultra HD technology, allows to maintain a very low level of distortion on the whole frequency band, while offering a beautiful sound precision.

The amplifier benefits from a nice design quality, using proven audio components. The power supply stage uses two Nichicon 50V 1000µF capacitors to filter the electrical signal.

As far as connectivity is concerned, this model remains simple, with a stereo RCA input as well as a 3.5mm jack output and of course an output on speaker terminals.

Technical characteristics

Specifications
Product typeAmplifier
Amplifier typeClass D
Impedance4-8Ω
Amplification chipTPA3251D2
Power output2x 140W @ 4Ω, THD+N 1%, BTL
2x 175W @ 3Ω, THD+N 1%, BTL
1x 285W @ 2Ω, THD+N 1%, PBTL
THD+N0.005% @ 1W 4Ω
PSRR60dB
SNR> 111dB (A-Weighted)
General
Dimensions179 x 104 x 43mm
Power supply24-36VDC (sold separately)
Weight542g
 
Data sheet
InputRCA
OutputSpeaker terminal
OutputJack 3.5mm
ColorBlack
Channel2 (Stereo)
ClassClass D / T
Amplifier chipTPA3251D2
Power (W)140.0
 
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Average votes
3.3 / 5
3 reviews
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 5/5
Date :
Très bon ampli - pourquoi mettre plus cher?
Je l'ai alimenté par une carte SMPS300RS 36V qui alimente 2 de ces amplis en fait (je pilote 2 enceintes actives), sur des HP 6-8 Ohm. La puissance de 300 W suit.
Concernant la taille des connecteurs de sortie: aucun soucis si vous utilisez des prises bananes.
Les Ampli OP sont soudés directement, donc si vous voulez les changer, pas évident. Je n'en éprouve pas le besoin: le souffle est inaudible sauf si vos enceinte sont à 50 cm de vos oreilles.
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This review has been posted for Stereo Amplifier Class D TPA3251 2x140W 4 Ohm
Note :
 1/5
Date :
NOT recommended
I cannot recommend this amp.
The case amp is very small, the output binding posts are ridiculously tiny and too close to each other.
The posts cannot be used with whatever "serious" cable or connector other than bananas.
I purchased it for testing purpose in an active system, but
I'm not able to judge the sound quality, cause the amp became dead silent at the very first use due to a supposed short on the output binding posts.
My fault, it's clear.
 (0)
 (0)
This review has been posted for Stereo Amplifier Class D TPA3251 2x140W 4 Ohm
Note :
 4/5
Date :
Simple et efficace
Marche a la perfection, rapport prix / rendement au top.
Petit b mol pour le knob volume, manque de solidité a l'intégration mais rien de terrible.

Pd: Bornier HP de petite taille (2 mm) à tenir en compte pour l'achat de câble et/ou fiche banane.
 (0)
 (0)
This review has been posted for Stereo Amplifier Class D TPA3251 2x140W 4 Ohm
 
Stereo Amplifier Class D TPA3251 2x140W 4 Ohm
This affordable Class D amplifier is based on a TOPA3251D2 amplifier chip, ensuring a power of 2x140W under 4Ω and this with high...

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