625 S2 and 725 mono-amps...are they Linear Class-A/B amps?
Jeff Rowland Design Group
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- 19 posts total
I was a big fan and owned many Rowland amps and pre-amps for a long time and ever since they went to the Class D - Power Correction Mode technology, in my opinion, they lost what one was beautiful sounding gear. Too bad as I was looking at their 625 amp and took a listen and to my ears all I could hear was that Class D sound. Now I would agree with everyone here that they are the best of the best for Customer Service - wonderful people and wish they would get to that ol' Rowland sound again. Just my 2 cents . |
Go by Jeff’s business if you ever get a chance to see a master craftsman and consummate designer. A first class gentleman. I don’t follow his models closely but I’m familiar with the 625 which I’m sure is Class AB seemingly heavily biased into Class A due to the very warm nature of the unit when on. If I had any criticism it ‘seems’ like his US dealer network is not the best but I understand a very large portion of his mkt is overseas. |
George,Yes your right they do still make linear only in these two, pity they used smp power supplies with them. Quote: " I suspect that the signal-to-noise measurement could have been tainted by very high frequency noise generated by the 625 S2’s switch-mode power supply" https://i.nextmedia.com.au/Assets/20170221014711_jeff_rowland_685_s2_power_amplifier_review_test_lor... All the rest of their range are Class-D though. Cheers George |
08-11-2018 11:00pmThe 625 and 725 are the only JR linear amps as riced1 pointed out, but what you may have heard from 625 was the (switch mode) smp power supply they both use, the artifacts could give you the impression that it’s Class-D. As they complained about in the above test I posted. Cheers George |
- 19 posts total