Pros: Fine SQ, small, cheap
Cons: Fails after 4 months, No input selection, (no sound controls)
One channel of my Denon 250 pre-amp/amp set failed several times per listening session. So I bought the SMSL SA-98 in Hong Kong for a mere € 98,99 including transport. The trip from Hong Kong to Rotterdam took far less than from Rotterdam to nearby Utrecht.
It's (switched) power supply is about the same size as the amp itself. The amp has good quality speaker and input connectors. I connected my B&W 604 S2 speakers - my PC-set due to a misunderstanding of its WAF-factor - and an Arcam rDAC. I used DIY interconnects between rDAC and amp. The rDAC is connected to my PC via an AudioQuest Cinnamon USB-cable - although I never heard a difference with a cheap USB-cable.
SMSL claims 2 x 60 W @ 8 Ohms. The amp has more than enough horse power for my speakers. Decent volume with the volume knob at 9 o'clock en high at 11. Not as much bass as my Denon produced, but this was solved when I removed the foam from the bass ports. Crisp and detailed sound. Tight bass, fine highs. Great soundstage.
Robben Ford's 'Bringing it Back Home' sounded great. Bass that could be felt in your stomach. Hammond organ that made my speakers shine. Robben's singing and guitar playing as if he was in my room. Every instrument on 'Emergence' by Roy Hargrove Big Band could be heard individually. Melody Gardot gave me shivers with her Wicked Ride on Some Lessons Learned.
The amp failed after a mere 4 months. So cheap Chinese stuff after all??? The eBay-seller wanted me to return the amp, which costs more than the purchase price. SMSL did not react.
So I bought a replacement pot for my Denon in Turkey, desoldered the old pot and soldered in the new pot. Back to my old Denon-sound. No more cheap Chinese stuff.