In an interview with the head of vehicle acoustic at Harman Kardon sound lab in Berlin, he was asked about fine tuning the system and if there was a need to make changes to the controls (equalizer). He said NO, those are there for preferences, maybe one or two clicks, but if you make extreme changes, you could destroy what his team did. The newer amps 6500, 6600 are edgier, not as natural .. truncated harmonics in the top end, though a bit tighter and better controlled in the bass notes than the 660. The 90's amps have a higher damping factor than the 660 .. The 90's amps sit in the corner .. I listen to the 660 with a streamer every day ..upstairs. From a purely sonic standpoint, the Harman Kardon Onyx Studio 6 delivers the kind of thump bass lovers are looking for. But in the portable, outdoor-friendly category, it has some worthy I bought a Teac TN-300 and it's fine, but like everyone else on here, I kept looking. : ) I have the opportunity to buy what looks like a decently-in-shape Harman Kardon T60 for $300. It has what the seller claims to be a new Ortofon Super OM10 cart and includes the weight and 45 adapter; i'll have to ask him if he still has the feet, since the I've read here that the Harman Kardon sound system in the 3.6R Limited is awesome and also that it is pathetic. Sound quality is highly subjective, but still these extremes don't seem right. I'm really happy with the Bose system in my Corvette, and folks complain about Bose as well. It's a fine power amplifier--given its age-- and made when Harmen Kardon was a real company, not selling consumerist crap. The HK 870 is a made in Japan amp with power supplies spread throughout and nice engineering and has true 100 watts per channel and a lot of torque to back it up. The BMW 3-Series Harman Kardon system employs Logic7 surround software with a full equalizer, internal hard drive, and even Spotify built in to get the most out of the 16-speaker, 464-watt system with two bass speakers under the front seats. 9. SUMMARY. The BMW i4 comes with a few different audio configurations, with the top-spec Harman Kardon system bolstering the number of speakers found within the cabin. The 16-speaker 464-Watt combination makes for an engaging and lively reproduction making it one of the best audio systems we've reviewed to date. App Vay Tiền.

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