Defect and too much Schnick Schack for a power amplifier

Defect and too much Schnick Schack for a power amplifier

CHEERLINK® SMSL SA60 60WPC 60W X2 Class-D audio power amplifier Hi-Fi Digital Audio Amplifier Powered with EU power supply, with bass-switching and memory function (2014 upgraded new version of SA-50) (Black) (Electronics)

Customer Review

The fed me sent SA60 was broken. After turning on the left channel began to "pump" - is a whopping dc voltage was applied every second to the left speaker, which meant that the membrane 1 cm each came forward.
Does a LS certainly not very good. Exchanged power supply problem still exists.
I opted for the SA50. Solid technology with no frills, as second input, loudness and "storable volume". A defined volume, in which I see before turning, as adjusted according to the final stage, might be the better solution since. The SA50 has such a balanced sound that Loudnesstaste is not required.
What also strikes you SA60: it is a 19Volt / 5.3A power supply with (operating voltage actually 24V) How to generate 120 output continuous power of 100 Watt input power, to me is not very clear, especially if the built-in chip of TI only with 2x50W is specified. The SA50 has a 24V power supply. Sometimes called "successor" is also a cheaper version of a successful model to produce.

ADDENDUM
Response from the seller to my review:
"This product is still very new and not yet as stable but we will do with SMSL our best to him always to improve."
"Although we had planned sampling inspection before we sent the item to Amazon warehouse, we can single defect unfortunately not avoid the defect rate of this product is approximately 98%. (Note from me: is probably 2% hot) you unlucky.."
"We'll give you an extra discount of 5 euros. We would be still enormous grateful if you could remove the negative review."

Useful App 1 Rank: 4/5
January 18
ESPECIALLY DO NOT BUY Rank: 1/5
August 8
Pretty captivating voice Rank: 5/5
February 9
disappointed 1577 Rank: 1/5
April 16
7 too late Rank: 2/5
October 5
Super 1880 3676 Rank: 5/5
November 20

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