They are underrated in voltage and can go bad prematurely. The Achilles heel of this amp are the main filter caps. You could also add some smaller 470nf PP film caps parallel across them.
#SONANCE SONAMP 260 SERIES#
You will also want to use good non polar electrolytics to replace C801 / C901 4.7uf lytics like nichicon muse series and increase their values to at least 22uf for better LF phase linearity and lower cutoff. My front end is a single vacuum tube pre-amp volume only control (no tone - just clip the red and white wires coming from input board and solder white to r501 / red to r401, then remove or lift one pin on both c401 / c501 4.7uf electrolytics. I later removed that turn on feature, unplug that stupid red LED and boom, I now have that clarity I love. My front end is a single vacuum tube pre-amp volume only control (no tone shaping). It has an amazing clean and very detail performance, once that little board is bypassed. Totally shocked that this $20.00 amp literally blew them all away, in one of my most sort after features. I've had an Adcom 5400, NAD, Yamaha and several others in my system. I then put it on my bench and decided to see what it sounded like If I removed that little crappy input stage/turn on board at the RCA'sĪnd what I can say after simply removing the small coax on the output of that little input board and attaching it directly to the Input on the RCA's, is that it is now the amplifier I am using. I got one of these 260 off Ebay working ant ready to test drive.įor a 50 watt amplifier it looks like an 100 watt on the inside and its heavy, with a large power transformer.ĭidn't think much on initial evaluation, but later on the geek came out of me. Great litttle amp if you make a few changes Lends itself as a good ‘training’ piece if nothing else? I think this amps simplicity and low worth (can be had on eBay -$100) Is there simple change outs to make it smoother on top?
#SONANCE SONAMP 260 FULL#
The 260 is supposedly stable to 2ohm and I’ve never been able to make it break a sweat.Īs a full range amp the top end is a bit too grainy and harsh (since new) for me anyway. It’s currently seeing duty as a sub amp driving dual 10’s I understand it’s not as simple as it may look and hope to find someone local to maybe mentor me through it.Īnyhow am I safe in assuming this amp is worthy to upgrade?
#SONANCE SONAMP 260 UPGRADE#
I want to figure out if it’s possible to easily upgrade any components of the sonamp 260.I own one of these (bought new around 2000’ish) and it’s hardly ‘audiophile’ but seems to me a well built and simple platform that might benefit from some ‘upgrades’. First off let’s make sure everyone understands I know very little about the subject I’m bringing up and my total amp repair experience is the changing of a faulty protection circuit in a h/k avr500.so please dumb it down as much as possible!
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