The new Coda S5.5 amplifier: It's a "Petite Beast"!

I have in-house the New Coda Technologies S5.5 amplifier for review for Stereo Times website. It will be awhile before I write the review. However, I'm so impressed by the performance of this petite amplifier, it only weights 45 pounds, that I wanted to give a heads up to you GON members if you are in the market for a balanced pure class A amplifier, delivers 50 watts @ 8 Ohms, and can drop 100 Amperes of current on a peak!

The world class build quality of Coda amplifiers is on display with the S5.5, along with the most beautiful purity of tonality, precise sound-staging, complete liquidity offered by pure class A design, and what might be the best top end regarding details, decays, and a natural shimmering without brightness or any edge at all.

The S5.5 uses extremely wide bandwidth output transistors instead of the usual TO3 devices used in most transistor designs. I own the Coda #16, which is great, but the midrange/high end is taken to another level of musical enjoyment with the S5.5. The S5.5 has a sense of speed/aliveness that is exciting to listen to that you experience in live music. The amp is dynamic as hell, has driven with ease any speaker I have tried it with, hence my nickname of the "Petite Beast". Remember, 50 watts pure class A, can drop 100 amperes of current and only weights 45 pounds.

Teajay (Terry London)


I have owned the CODA 07x for a year. I listen near-field and the 07x was way too noisy for me. The Holo Serene is a comparable and totally silent with better clarity but not as tubeby. Someone that wants more warmth may like the 07x more.

I think the Class A Schitt Mjolnir v3 is a better comparable to the 07x. It is quieter and sonically sounds a lot like the 07x. I have both Mojolnir and the Serene connected to the CODA #16 at the same time (RCA + XLR). I may listen to the warmer Mjolnir once in 2 weeks. When I do I love it.

Only problems with the Mjolnir V3 is that it costs $1200 and has no remote.


I would like to add my 2 cents to this thread.  I have a Coda 16 amp which i really like and it replaced a set of PS mono blocks.  I do not think the 16 is really any better sonically than the PS BHK monos,  but I did not want to deal with tubes anymore.

However my reason for writing is to comment on the 07x.  My last three preamps have been the BHK preamp from PS,  then a Pass XP22, and then the 07X.  to my ear,  the Coda is the Goldilocks of the three.  not as euphonic as the BHK, not as clinical as the Pass,  but just right.  I really have enjoyed my system so much more since getting it. It too is a little beastie.  

hope that helps.




I am in a similar search for a pre amp for the S5.5 for my 99db Forte 3’s and from just doing paper research on preamp, am leaning towards Backert Labs Rhumba Extreme 1.4 or Rhythm 1.4 balanced line stage. Would have to part with my 1yr old perfect CSiB, new mint Technics 1210GR TT in box, Mac C27 pre, ARC SP8 pre and Mac MC2125 amp first for the economics to work out but seriously considering doing that.

On the S5.5, its WPC rating is 50wpc @ 8 ohms class A. 100wpc @ 4 ohms AB. 100 amps. My concern is if Magnepans can be comfortably driven with the S5.5 (86 db, 4 ohm, require high current) without stressing the amp. Any input on how the S5.5 handles Maggies or electrostats is of definite interest! Thanks.



@ronkent the issue for me was that I could hear hiss from the preamp on quiet musical passages. Once I heard it was always on my mind and I was only listening to the hiss, even on louder passages. Now this hiss level is about the same for a lot of gear, except the 2 preamps I use now, which are totally silent.

I sit about 8 feet away from the speakers so that is rather close.

@hanki Did you check on the temperature of the amp after driving them at say 90db for a few hrs? It would be interesting to see how much effort the amp is putting out to drive your 4 Ohm speaker.



@firefly627s Thanks for that observation/suggestion - the Backert is definitely on my very short list. I can't recall every reading anything remotely negative about the Rhumba Extreme much less the Rhythm. And it's goodness was also confirmed in this thread by @vthokie83 ... Still can't wait to hear back from @minatophase3 on synergy with Holo Audio Serene. I'll need to sell some surplus gear to make all this happen too... Luxman 550 MkII, Cary Audio SLI-100, and possibly my beloved CSiB. From everything that's being said here... This is has the makings of exactly what I've been looking for. Thanks again to everyone who is contributing to this thread.