Initial impressions - Solo vs HA-2

Oct 6, 2004 at 9:22 PM Thread Starter Post #1 of 19

sclamb

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Today I took delivery of a new addition to the family, a brand spanking new Corda HA-2
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Whilst it has only been playing for three hours, there are some very noticeable initial impressions that it leaves.

The HA-2 oozes quality. It is heavier than the Solo and the attention to detail in the manufacture is easy to see, down to the engraved face plate. Overall it is about 50% bigger than the Solo, and the all-black casing really looks very nice. Only gripe here is the rubber feet which have been stuck on and not properly aligned with the sticky pads so they look a bit off-centre. However, I don't have to look at them so I can live with that very minor gripe.

The initial impression after switching on and listening straight away through the Senn HD650s with Zu cable to the Pat Methany Group was that the sound was muddy compared to the Solo. However, after the first three hours everything has opened up and there are some very obvious differences, and I am sure with further burning in that these will become even more apparent.

The difference between the 0 ohm socket and the 120 ohm socket is very noticeable. In the 0 ohm socket the sound is much more analytical and seems to be purer in its elements. Switching to the 120 ohm socket and the sound becomes warmer and more blended. Having listened for ninety minutes straight I think that the 0 ohm is more to my liking with my set-up.

Crossfeed is not something that the Solo offers but having now noticed the difference that is makes on the Corda I am a convert. The combination of 0 ohm and low crossfeed is excellent and the music is defintely less fatiguing after a lengthy period of listening.

So, the initial impression of differences between the Solo and the HA-2.

1. BASS!!!!! I thought the Solo had powerful bass but I immediately noticed the deeper but more controlled bass on the HA-2. It just seems to be more full, more controlled and very tight. The Solo in comparison seems to throw the bass down your ears whereas the HA-2 lets is flow.

2. Soundstage. Again the much better soundstage of the HA-2 was apparent from the first notes. Visualisation of the music is much easier and the breadth of the soundstage is noticeably wider, something that I thought would be difficult to beat the Solo on, but beat it the HA-2 has.

3. Separation. There is more discernible space around the instruments, a concept that I was having difficulty in understanding until listening to the difference between the Solo and the HA-2. Instruments seem to have more space between them, and I am once again hearing nuances that I did not hear when listening through the Solo.

4. Refinement. This is one of the biggest differences I have noticed but at the same time one of the hardest to describe adequately. Listening to tracks that I have played over and over with the Solo, they just seem to be more refined, a better quality of sound which ultimately is more relaxing. I remember Pink Floyd once said that the Solo was like a Ferrari whereas the Chairra was more like a Rolls Royce (or a similar car analogy). Well, now I know what he meant. Where the Solo is forceful in rendering the music, the HA-2 is accurate and refined.

I really want to let this baby burn in for a few days before comparing the performance of the HA-2 versus the Solo on specific tracks, but if this can only get better then I know that I will not be disappointed.

In my set-up now I have the Senn HD650s, Zu Mobius, Corda HA-2, Chord Chorus ICs and Arcam CD73T. So now I am thinking, how much better would this be with a better source
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What I can say for sure at this point is that the Corda with the HD650/Zu combo is awesome. Speaking to Jan today, he said that only 100 HA-2s were manufactured. With the Meier offer currently running in Mall-Fi, if you are in the market for a solid state amp and have Senns then this is really something worth listening to. And you get to buy into a limited edition as well
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Simon
 
Oct 6, 2004 at 9:31 PM Post #2 of 19
Very thoughtful review! I always enjoy reading Solo comparos. In fact, I hope more amps from across the pond make their way over here so I can compare them at meets. If my modded Solo is going to be the lone rep in NYC this fall, it will be a shame. I want to hear stock versus modded, Solo versus Sugden, Etc etc!
 
Oct 6, 2004 at 9:41 PM Post #3 of 19
Your modded Solo may be a closer match to the HA-2. I know Mike has made the mods and he is a Chiarra man so if that is his benchmark then the sound from your modded Solo is probably more refined that that from my 2004 spec one.

I do like the Solo and Graham Slee has done a great job with it. Mike has gone a bit further, something that would not make economic sense for Graham to do as it would make the Solo too expensive.

Simon
 
Oct 6, 2004 at 9:46 PM Post #4 of 19
Mike gave the old "Pinkie" a serious mod job, as you mentioned. In fact, he recommended bootstrapping it with some resistors, and lan is pulling this off for me here in NYC as we speak. Plus lan modded the Slee PSU-1 and he feels the resulting sound is even more revealing. I really can't wait to get my Solo back!
 
Oct 6, 2004 at 10:14 PM Post #5 of 19
Congrats on your HA-2 purchase, Simon! I think I've been one of the first HA-2 owners, and I still think it's an awesome amp. Maybe you'll find my review useful or at least entertaining -- it describes my rollercoaster ride during its burn-in phase. It needs at least 100 hours to sound at its best, so expect some further improvements.

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Oct 6, 2004 at 10:46 PM Post #6 of 19
Jazz

How did I miss that review! I searched for HA-2 reviews and found a couple but not yours. Your one has definitely given me reasons to be happy in that I knew things could only get better.

It will probably take me two or three weeks to get over 100 hours on the amp so I shall refrain from any more comparisons to the Solo until things have settled down a bit, but on initial showings it is a sure winner.

Thanks for the pointer to your review. You are a much more critical listener than I and more attuned to the nuances of the changing sound of he amp, so it is interestng to read of things that I may identify and experience over the next few weeks.

Simon
 
Oct 7, 2004 at 12:05 AM Post #8 of 19
No, it is still there
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I just have to live with it and it seems as time passes that some days I notice it less than others.

I like listening to headphones and listen at moderate to low levels, as I have always done. I just wanted to try something different to the Solo, and had always liked the look of the Corda amps.

Simon
 
Oct 7, 2004 at 12:10 AM Post #9 of 19
Understood,


Hope the tinnitus hasn't come between you and the music. Great to know you're still fighting it Simon........... keep up the good work my thoughts are with you mate.

All the best.

Mike.
 
Oct 7, 2004 at 12:35 AM Post #10 of 19
Quote:

Originally Posted by Jahn
I really can't wait to get my Solo back!


Mike has more tricks up his sleeve. If he keeps dishing them out, it'll be a while till you see it back
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He's talking of this other cap now.
 
Oct 7, 2004 at 12:48 AM Post #11 of 19
Quote:

Originally Posted by lan
Mike has more tricks up his sleeve. If he keeps dishing them out, it'll be a while till you see it back
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He's talking of this other cap now.




Whozawazzit? If the tricks keep coming keep soldering them in! I trust your ears - this is becoming an international effort! Hmm, I'm going to have to rename this thing "Pankie" or something, but that sounds ridiculous even to me
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Oct 7, 2004 at 2:34 AM Post #12 of 19
Hey Jahn & Lan!!!

I love following the exchanges you guys go through. They're fun, fascinating and energizing.
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Oct 7, 2004 at 3:33 AM Post #13 of 19
Quote:

Originally Posted by Romanee
Hey Jahn & Lan!!!

I love following the exchanges you guys go through. They're fun, fascinating and energizing.
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Lol I'm just as excited, how can you not be right? Bit by bit this amp is getting better and better, I think it's going to become NYC's head-fi amp mascot pretty soon!
 
Aug 30, 2006 at 9:17 AM Post #14 of 19
Hi guys,

I've been pondering between either of these two amps for my upgrade. I simply can't decide!

I have one (crucial) question to those who have heard this amp. Which of the amps will present the best-sounding bass out of the HD-650 (not in terms of volume, but rather in terms of agility, definition and overall quality - we know the phones have no need for further bass boost)? Also, how dis-similar is the HA-2 to the Headfive, i.e. is the former considered faster and brighter?

Regards.
 
Aug 30, 2006 at 9:33 AM Post #15 of 19
Well, I was using the 2004 Solo and I know that not only has Mike modded Solos but also Graham Slee made revisions for the 2005 model (which I believe is the Mark IV). Also, I had an HA-2 Mk I and I believe that has been superceded. So my comparison may not be valid for the amps that are available today.

That said, I found the strongest bass to be from the Solo, but the more refined and, to my ears, accurate bass to be from the HA-2. The HA-2 just seemed to have a refinement to the sound that was missing with the Solo.

As I say, take my comments here and above with a pinch of salt as they are not reflective of current models.

Simon
 

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