TOPPING PA3S Amplifier Class D Balanced 2x MA12070 2x65W 4 Ohm Silver

TOPPING PA3S Amplifier Class D Balanced 2x MA12070 2x65W 4 Ohm
Topping offers with its PA3s a small balanced Class D amplifier, simple, powerful and affordable. It is based on two Infineon MA12070 amplifier chips and has two balanced and single-ended outputs.

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Reference : 15659
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Topping PA3s

Amplifier Class D Balanced 2x MA12070 2x65W 4 Ohm Silver

Topping PA3s Amplificateur Class D Symétrique 2x MA12070 2x65W 4Ω

Topping offers with its PA3s a small balanced Class D amplifier, simple, powerful and affordable. It is based on two Infineon MA12070 amplifier chips and has two balanced and single-ended outputs.

Topping PA3s Amplificateur Class D Symétrique 2x MA12070 2x65W 4Ω
Topping PA3s Amplificateur Class D Symétrique 2x MA12070 2x65W 4Ω

Class D balanced amplifier 2x MA12070

The PA3s is based on a pair of Infineon Merus MA12070 Class D amplifier chips, allowing to develop a power of 2x65W under 4Ω or 2x37W under 8Ω with high efficiency. Moreover, this balanced architecture, with one chip per channel, allows to reduce considerably the crosstalk for a precise restitution. The heat is dissipated by a large radiator covering the two amplifier chips.

Balanced & single-ended inputs

The PA3s offers a dual input to suit all needs and systems. There is a single-ended stereo RCA input and a balanced dual 6.35mm TRS jack input. The use of the balanced input eliminates any possible ground loop problems to promote a clear sound. The inputs are selectable directly from the front panel button.

Topping PA3s Amplificateur Class D Symétrique 2x MA12070 2x65W 4Ω
Topping PA3s Amplificateur Class D Symétrique 2x MA12070 2x65W 4Ω




Test du Topping PA3s par Audio Science Review (Amir)

Here, it seems they have taken a standard platform and really optimize it as they do with their DACs. This shows in very low noise level, nice crosstalk and excellent frequency response. "
Test du Topping PA3s par Audio Science Review (Amir)



Technical characteristics

Specifications
Product typeAmplifier
Amplifier typeClass D
Amplifiction chips2x Infineon MA12070
Inputs1x Single-ended stereo RCA
1x Balanced stereo Jack 6.35mm
OutputSpeaker terminals
Measurements
Single-ended inputBalanced input
THD+N @ 1kHz (A-Weighting)< 0.005% @ 4Ω 5W< 0.0045% @ 4Ω 5W
< 0.004% @ 8Ω 5W< 0.004% @ 8Ω 5W
THD @ 20Hz-10kHz (20kBW)< 0.008% @ 4Ω 5W< 0.007% @ 4Ω 5W
< 0.007% @ 8Ω 5W< 0.006% @ 8Ω 5W
SNR @ Max Out 1kHz, A-Weighting107dB112dB
Dynamic range @ 1kHz, A-Weighting107dB112dB
Frequency response20Hz-40kHz (±0.1dB)20Hz-40kHz (±0.1dB)
Output level46Vpp @ 4Ω46Vpp @ 4Ω
48Vpp @ 8Ω48Vpp @ 8Ω
Noise (A-Weighting)< 70µVrms< 70µVrms
Crosstalk @ 1kHz-96dB-100dB
Input sensitivity0.92Vrms1.75Vrms
Gain25.2dB19.5dB
Channel balance0.5dB0.5dB
Output power2x 80W @ 4Ω THD+N < 10%
2x 45W @ 8Ω THD+N < 10%
2x 65W @ 4Ω THD+N < 1%
colspan="2"2x 37W @ 4Ω THD+N < 1%
Adapter impedance4-8Ω
General
Supply voltage26VDC (power supply included)
Dimensions120 x 168 x 40mm
ColorSilver
Topping PA3s Amplificateur Class D Symétrique 2x MA12070 2x65W 4Ω Topping PA3s Amplificateur Class D Symétrique 2x MA12070 2x65W 4Ω
 
Data sheet
InputRCA
InputJack 6.35mm
OutputSpeaker terminal
ColorSilver
Channel2 (Stereo)
ClassClass D / T
Amplifier chipInfineon MA12070
Power (W)65.0
Remote ControlNo
 
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Average votes
5.0 / 5
1 reviews
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 5/5
Date :
Classe D
Après rodage, ce petit ampli fonctionne très bien avec une puissance suffisante. Il rend toute la finesse de mon DAC D70 de la marque. Ce qui est remarquable, c'est son absence de dureté dans le haut du spectre (souvent un défaut que j'ai constaté sur mes amplis classe D précédents ) pas de perception de distorsion sur mes enceintes haut rendement et par conséquent pas de fatigue auditive. A noter, il ne chauffe pas et donc peut fonctionner même par temps de canicule ! De mon point de vue il présente deux petits défauts, le bouton de mise sous tension tactile semble fragile et les sorties symétriques pour Jacks 6.35 compliquent la connectique pour l'usage de ce type de matériel (je n'ai pas trouvé de câbles jack/XLR pour relier à un DAC pourvu de ce type de connexion).
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This review has been posted for TOPPING PA3S Amplifier Class D Balanced 2x MA12070 2x65W 4 Ohm Silver
 
TOPPING PA3S Amplifier Class D Balanced 2x MA12070 2x65W 4 Ohm Silver
Topping offers with its PA3s a small balanced Class D amplifier, simple, powerful and affordable. It is based on two Infineon MA12070 amplifier...

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