Oh so silky smooth. Needs quality cables to get the best sound - MIT or Transparent work well.

Slightly lacking in low end grunt and high frequency is marginally soft, so ideal for brighter bass heavy loudspeakers. Don’t switch it on immediately after switching it off - I blew the output stage as the protection circuit did not kick in soon enough! Expensive fix, but it sounds better than it did new now!!

I'm familiar with Krell amps, own few pairs in the past. I must said that the KSA-100S is one special amp much better and more musical amp then my previous Krell KMA. The KSA-100S features Sustained Plateau Bias technology, the main advantages of S.P. B tech basically savings in electrical power consumption and cooler Class A running amp not like your typical Class A amp that the run very hot. Ok my impression about the KSA-100S more neutral, great midrange, detail, smooth sound, dynamics, bass, deep soundstage, powerful also nice looking amp too, havy about 80 lbs and well made, reliable and hold pretty good value these days. A sweet Class A amp Highly Recommended

The only weakness that I found out on the KSA-100S is you not be able to connect banana plugs ONLY spade lugs.

musicality and accuracy and misurement

different transformer of 100s' along with it's manufactured year.

i'm a chief of lui digital (makes handmade tube audio/digital system)

i bought this amp about 20 times.....hmmm...

there's two kind of 100s' transformer

one is troidal shape, another is r-core (square type)

the former is better in every sound factor.

i like this amp because of it's hiend standard sound, especially no-sharp-and-transparent-mid range and so forth..

i like krell 50s, 100s, 250, 300s, fpb 300c, 400cx

frankly speaking...

the mesurement of audio is not importent.

but if misurement is suitable with it's sound quility, the amplifier can moremusically impact most listner..

not many tr-amp can plays well the 'cantata or missa'

100s is rare amp to classicphile

Customer Service

i can manage

Similar Products Used:

hundreds

I was once told that once you have experienced the warmth and detail that only a Krell can produce then you will never use anything else, so far so good, for me it is still to what all others are judged, I am still using my beloved KSA100 and it has never let me down, today there are I'm sure better amps out there but when played side by side could you honestly say one is better than another at this level how much more would you pay to convince yourself what you are hearing is actually better, eg Audio Note 7watt power amp some years back priced at £60K was it better??? if so... it was not £55K better, stick to the classics they are affordable and were all state of the art at one time,

Stamina, power, ambiance, built like a sub...

May lack a little body compared with the best of tube amps.

Nice..... simply nice. It drives my Snell A3i with ease, and I have not yet lacked power. Detailed but still laid back in nature. I simply love my new amp. Go buy one !

Similar Products Used:

Audio Research d-110, Zapsolute Mk2 mono blocks, Electro Companiet 180W mono bloks ( can´t remember the type! ) EAR 509 and 519 mono´s, Holfi Power NB2

Clarity, openness, lack of coloration. Transparency, detail, rock solid imaging, very quiet

(qualified), could use more power

I've found the KSA100s to be a perfect complement for my Boston Lynnfield 500L (upper/mid arrays). The KSA100s is exceptional in accurate rendition of the human voice, and all instruments - natural or synthesized - which I have been able to find. I'm currently using a Sony SCD-777es CD player (with SACD) and find that the SACD material is very, very detailed and subtle on this system

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Adcom, Threshold, SAE,Bel Canto,Plinius

Clean, transparent, Well built

Heavy

Excellent amplifier. I could not imagine needing much more power. It runs the Nautilus 804's perfect.

Similar Products Used:

Levinson No 331, Krell kav250, Krell KSA200s, Parasound

Great mid transparency. Neutral sounding.

None

A not to be be missed 100 Watts amp.

AMAZING!

NOTHING!

BUY IT!

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ONE OF A KIND!

Good performance at hi, mid and lo frequencies. Very smooth and silky sound. Outstanding driving ability.

None.

I had bought it for over 6 years. It's another lengendary power amp from Krell. I learnt the KSA-S series created a sales record.

It can drive the famous low sensitivity and hungry speakers like ATC. No doubt Krell has lots of innovations like sustained pletaeu bias.