[opnly bafld]

"Class-T" is actually Class-D.  This fake class designation is marketing, not engineering.  Not to disqualify it, though, just because some marketing types set out to push something they don't understand.  I bet the engineers went kicking and screaming on that one.

I think it was quite brilliant on the part of the designer (Tripath) to differentiate his class d amp (which was designed to provide a higher quality sound on the cheap) from the many other bad sounding class d amps available at the time it came out.
Much more brilliant than you naming your company the "Digital Amp Company" since it is neither a digital amp or a DAC. 

Lin

[opnly bafld]

I say your partnering speaker option should dictate which you should purchase.

I agree.

I agree.

[jhm731]

How can you compare an amp that puts out 600 watt/ch at 8 ohm with amps that put out 30 watts
at 8 ohms?

If you have speakers with 95 db + sensitivity than the Red Wire might be an option, otherwise the
MIII Mk2 is the way to go.

sounds like you are a salesman for spectron   everywhere i look youre pushing that amp     i agree with not comparing 30w to 600w or whatever .   what about tact or ps-audio or bel-canto or channel islands or the other class-t or class-d amps?????

I believe jhm731 uses a modified TacT 2150 amp.   

There are other people who are "pushing" the Spectron amp much more.   

We all tend to push the gear that we own and like.  It can be challenging at times to not seem like we are on a particular vendor's payroll, but for the most part, the people here at AC are genuine and try to give good advice.

George

George is correct. I currently use an Aberdeen S2150, it replaced a MII.

My friend who also had Aberdeen S2150s swithed to
to MIII Mk2 SE(w/V-Caps) monos, and a MIII Mk2 SE for his subs.

I recently changed to lower sensitivity speakers and the MIII Mk2 SE is high on my "to try" list.

Now, if I could just get that sales job with spectron....  

[jwes]

I did not know that RWA Sig. 70.2 was 70wpc?????   

It's not. It does offer higher current delivery, however.

That's right.
70wpc into 4ohms
30wpc into 8ohms

It could be confusing for someone new reading this thread and should be clarify. Other then that, like everything in life or more like in HiFi Life - It boils down to personal preferences and most importantly system synergy and comparability.

Mariusz

These are the ratings per Vinnie's site.  70.2's do 70 W into 4 ohms.  I guess I'm not sure what's confusing, but if whatever that is has been clarified, then that's great.  By the way, I like your postings in his "circle" site. 

As was mentioned in the thread here, the key is current for these speakers, which is why the odd discussion of two very different powered amps (well Spectron amp vs. RWA monoblocs).  Both will have plenty of current.  Too many great ideas on this thread to acknowledge and respond to all, but it looks like I might be able to try both - which is the ideal way, as many have stated in different ways...  The tricky thing is replacing an integrated, which requires trying out both new pieces (pre and amp) at the same time.  Thanks everyone.

To the DAC guy, can you make "black cherry" face plate? 

[Mariusz]

I am sorry, I might have missed your earlier post stating that information.

As to 88db speakers (into 4ohms).......with RWA Sig.70.2 it might work but it is not necessarily the only option.
It sure is a difficult load but it all depends on your room size, usual volume that you listen to, aliveness of the room and preamplifier that you think of pairing it with (gain)etc.
However all this is just speculation and nothing and no one can answer this better the in home audition with your own gear, speakers in  question and of course your own ears. If you could arrange the audition with both components ( I think it is possible...at least with RWA. I do not know about Spectron) ,  I am sure the murky waters would turn crystal clear.

Good luck

Mariusz

[RodMCV]

I wonder if the speaker rating 88dB into 4 ohms tells the whole story?
Nominal or minimal for the impedance?

Throughout the frequency spectrum many speakers impedance will vary quite widely and dips low will put a tremendous load on most amps, distortion n clipping etc. occur. This can be a more profound effect on power demand then the dB rating. And this can be at low and higher sound pressures. To produce beautiful music in this difficult circumstance requires both voltage, current, speed, headroom and sustain of that power burst.

Some people say that solid state does the first half of the note best and tubes do the last 1/2 best.
Ah..The debate of the attack and the decay.
Well I believe ,as a professionally trained horn player, that the whole music lives in the whole note!!
This is the realness and the life like sound of a fine system.

This is one reason why some amps sound better with some speakers and versy visy.
I don't know the impedance limits of the Red Wine amps but the Spectron will drive down to .01 ohms.
That is one reason why most all speakers sound great with the New Spectron Amps(and I don't know any that don't), as most owners will attest to. 

The Red Wine amps had a wonderful reputation and will drive higher power demands then other Tchip amps
King Rex,Clari-T,etc.

But when it comes to one amp that can take on all comers, you can't beat the Spectron, see recent review in StereoTimes.com.
Now I am not going to us my Spectron amp on my 98dB speakers, but on my SP-Tech? You bet!!

In the spirit of great sound,

Rod

[AmpDesigner333]

Hi, thanks for the thoughts!

On after market power cords, I wasn't saying that the Spectron definitely needs them, but rather that the Red Wine Audio definitely would not, as it uses a charger for its battery power.

I have read some of that thread on the Digitial Amp Company.  Sounds like an interesting new product from what looks to be a new company...  Not sure, but I will go look.

jhm731 now has a DAC4800A...
Maybe he can comment about the sound of this amp at low levels, which some say is similar to tubes.
I am the founder of www.DigitalAmp.com.  Thanks.

Regards,
Tommy

[AmpDesigner333]

To the DAC guy, can you make "black cherry" face plate? 

We can definitely customize the Cherry face plate (even custom silk screen)!  You're not the first to ask about this.  Send a private message if you're interested.  Thanks.

[jwes]

Rod,

The minimum impedance is 3.6 ohms.  Thank you for your thoughts!

[RodMCV]

Hello,

I have been learning so much lately about the otherside of the mountain...Tube Amps.
I have been told it is best to have an amp that will cover down to .4 ohms for a 4 ohm speaker if no distortion is to be the rule of the day.(.8 for 8 ohms etc).
Is this a common rule of thumb?

Rod

[doug s.]

I say your partnering speaker option should dictate which you should purchase.

Spectron can push lumbering beasts into dance, but the RWA 70 will call for a different speaker partner.  If you have one of these highly demanding speakers, I would PERSONALLY, opt for the higher powered amp.

PS:  What speakers are you thinking about powering?

Right now, Dali Euphonia MS4.  When it's time to upgrade in a year or so, potentially one of the Zu's (Def'n 2 or Presence) or the Emerald CS2/CS1.  For the latter, if I went with Red Wine now, I'd have to put those on the top of the CS2's, and if Spectron, I'd put that on the bottom.

if you're considering more efficient speakers soon, i would definitely not consider the spectron, if you think it's gonna be relegated to bass duties.  not that it wouldn't be great, but there's no reason to spend that kinda cash on an amp for the bottom of a bi-amped speaker - you can get a fine amp for that kinda service at $1k or less, new or used, imo...

doug s.

[RodMCV]

Thats right, a set of Eagle 11 monos, or stereo Eagle 2 , 2a
 are legendary bottom supports.