Should I buy a Class A Amp.

nutty " ... My Mark Levinson no. 334, the "Voltage Gain Stages" are biased to operate in a full class A mode ... Laws of physics cannot be denied. The Levinson no. 336 draws 50 amperes at 120v ... "

That seems very dubious. It surely can’t draw 50A from a 20A line. How do you have this amplifier connected to AC?

I have a Rega R CD Player a Rega R Dac a Thorens 160B Turntable with a SME 3009 series 2 improved tonearm with a Grado Platinum Cart.  I also have Tara Labs Interconnects and finally Luminous Silver Speaker Cable. No Power Cords except the ones that came with the Components.

jafant,

Ayre cx7emp, CD OEM power cord
Classe CP60 , Nordost Brahma power cord
Mark Levinson no 334, Voodoo cable Fire power cord, 8awg
Totem hawk speakers

Straigtwire Crescendo balanced interconnects
(Sometimes I run Audioquest Cheetah silver interconnects w/dbs)
Audioquest Gibralter speaker wire, 2 full shotgun runs for true biwire.
(I’m waiting for Paul at Clear Day to send me some cables for demo)

N

Hi Don,

In terms of their impedance characteristics, your Eminent Technology LFT-8B speakers are exceptionally easy to drive compared to most others. And their wavelaunch characteristics, which are essentially planar above the deep bass region, mean that at typical listening distances their 83 db sensitivity rating is equivalent to the sensitivities of box-type speakers that are rated at least several db higher.

Therefore the ability of an amplifier such as the KSA-200 to supply huge amounts of current and power into very low impedances would be unlikely to provide any benefit with your speakers. Meaning that a considerable fraction of your amplifier dollars would be going toward amplifier capabilities that you don’t need.

Also, as has been alluded to the age of such an amp suggests that condition-related issues stand a good chance of surfacing sooner rather than later, and repairs can be expected to be expensive.

That said, I would expect that an amplifier upgrade of some sort is likely to provide significant benefit. I say that in part because the extremely "good" specs on your Sony TA-N80ES amp for THD and IMD are suggestive of the likelihood that feedback has been applied in the design in a heavy-handed manner, which can often do more sonic harm than good.

Also, if by any chance you are using the balanced inputs of the Sony amp, I would definitely try changing to the unbalanced inputs. I say that in part because its balanced inputs have an input impedance of only 600 ohms, which most consumer equipment cannot drive with optimal or even good results, and in part because the writeup I linked to indicates that the balanced inputs were implemented using "rather low-end componentry."

The bottom line on what I would do regarding an amplifier upgrade is to begin by researching what amplifiers others have reported to provide good results with your particular speakers. And then consider whichever of those strike your fancy and suit your budget, regardless of whether it is class A, AB, or D, and whether it is tube or solid state. While keeping in mind that the manual for your speakers recommends amplifier power ratings of between 75 and 200 watts.

Best of luck. Regards,
-- Al