Swissonic SA 33

Mixer Amplifier

30 W
100 V and output for low-resistance speakers (min. 4 ohms)
2x Micro- and 1x Line/phono input
Master tone controls
Talkover function
Pre out / Amp in for looping
12 V Emergency power supply is possible
Dimensions: 280 x 75 x 190 mm
Weight: 4.5 kg

Further information

Line Transformer 70/100V	Yes
Convection cooled	No
Power	1x 60 W
19" Rack Compatible	No

16 customer ratings:

5

8 Customers

8 customers have given this product a 5-star rating.

Of these, 7 customers have written no texts or given their feedback in another language.
4

5 Customers

5 customers have given this product a 4-star rating.

Of these, 5 customers have written no texts or given their feedback in another language.
3

2 Customers

2 customers have given this product a 3-star rating.

No customer has written a text about this; or they have written a text in a different language.
2

1 Customer

One customer has given this product a 2-star rating.

No customer has written a text about this; or they have written a text in a different language.
1

4.3 / 5.0

handling
features
sound
quality

10 written ratings Read all reviews

Good value for money

30.06.2014

Bought this amp for use in a small church. Works very well. used with a lapel mic for the priest. Easy to get the right levels for optimum performance. would recommend for anyone who's on a budget.

Helpful · Not helpful · Report review

Do you believe this rating to be inaccurate or unacceptable for some reason?

Please give us the reason for your assessment in the following text box and – if possible – your e-mail address for further questions. Send report

Works ok with 230 VAC, but not with 12 VDC input!

22.10.2014

Basically this amplifer does its job as supposed, but only when powering on 230 VAC. When running on 12 VDC (also tried with 14,4 VDC - lab psu) strange thing happen: if using mic on MIC1 (talkover function), when signal goes higher then certain level (around 2/3), amplifer shuts down and recovers after around 5 seconds. If you connect microphone to MIC2 (no talkover) it works normal!!! (that means, that power amplifer probably works fine, but not the logic for talkover, which somehow puts amplifer in some standby mode).

Talkover function is fixed on first microphone channel and works ok, but no parameters can be set (music/talk ratio, release speed ...).

However, for such money that's quite good amp to use with 230 VAC.

[EDIT]
Because using at 12 V is urgent for my application, I first tried to raise voltage on 12 V input up to 15 V, but didn't help. Then I used 5A adjustable DCDC stepup, set it to 21 VDC and connect it right after the bridge rectifier after transformer (on 230 VAC line). Additional 10000 uF capacitor was added as well. This way, amplifer can also work with 10 V input voltage.

Helpful · Not helpful · Report review

Do you believe this rating to be inaccurate or unacceptable for some reason?

Please give us the reason for your assessment in the following text box and – if possible – your e-mail address for further questions. Send report