TOPPING PA3S Power Amplifier Instruction Manual
- June 14, 2024
- TOPPING
Table of Contents
TOPPING PA3S Power Amplifier
2xMA 12070 Fully balanced
Class D amplifier
Each channel of PA3s uses one MA 12070 Class D power amplifier chip. This
allows separation in layout improving performance and reducing crosstalk. The
power is shared across two chips, the heat dissipation is also halved for each
chip, improving reliability and extending the lifespan of the product.
High output
power
PA3s could output 80W x2 at 4ohm load, 10% THD+N. In higher standard of THD+N
of 1%, output power will be 65W x2 at 40hm load. The output power is enough to
drive any bookshelf speakers and even some floor speakers. 
Balanced + Single-ended inputs
PA3s provides TRS balanced input and RCA single-end- ed input. The use of
balanced input eliminates potential ground loop problems giving the pristinely
clean audio without any hum. Two inputs are selectable using front panel
button. PA3s will remember the input selected when it was turned off.
“Comfort zone” with lowest distortion
The lowest THD+N of PA3s is in the range of 10-20W output, which happens to be
the power range commonly used for listening to music. Everything is just in
the right condition.
D10 Balanced could be best
USB DAC for PA3s D10 Balanced can provide high-fidelity USB decoding and TRS
balanced output. When used with PA3s, it is equiva- lent to adding a high-
performance USB input to PA3s. This combination is simple and efficient.
With the help of a DAC, the function is expanded to a greater extent PA3s can
be used with a DAC to expand the categories of digital inputs; if used with a
DAC+HPA, more comprehensive functions can be achieved. 
Spec
Contents list
- PA3s
- AC to DC power adapter
- AC cable
- User manual
- Warranty card
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