Ref-75-SE delivered ...


It arrived late yesterday via UPS. I had company over last night so I didn't hook it up 'till this morning. I had it playing by 7:30.

I sold the REF-75 early last month and was using my spare, which is a great sounding ARC- Classic 60. Man, if someone is looking for a musical amp at a reasonable price, the CL-60 would be a good way to go. It kind of has that vintage tube sound. Listening to music through it, is kind of like watching a good Technicolor movie. Hey, who doesn't like watching the original version of The Wizard of Oz? Its not right, but its beautiful. I mean, when you walk outside, Technicolor doesn't hit you in the face ... reality does.

Which brings me to the REF-75 and the REF-75 SE.

I bought my original REF-75 over two years ago, brand new, with KT120 tubes. What struck me about that amp was the lack of grain, the soundstage and the tonality. It played big and it played beautifully. That's what I thought until I swapped out the KT120's for a new quad of KT150's. Now that brought the amp up to a new level. Audio nirvana, I thought. Hummph, silly me.

Enter the REF-75 SE.

Fist thing, I let it cook for about a half hour in order to get the amp to stablize so I could check the bias. Good thing too because both sides needed biasing. The right channel was all way over to the "Caution" level.

Upon initial listening, I was really taken by how quiet this amp is ... I mean QUIET!! Not digital quiet, that kind of quiet just sounds totally artificial to me. What I mean is ... its a natural quietness unlike any tube amp I've ever heard.

For the first two hours, it was better than the REF-75 it replaced by maybe 20% or so. At the two hour mark, things really started to open up. Here's what my notes say:

Quiet!
Articulate.
Dynamic.
Decay of notes.
Presense.
Fast.
Leading edge of notes.
Weight in the lower registers of the piano.
Sustained notes - has me hanging on a thread.

So how does this play out when listening to music?

Like most of us, I have a little section of records (among thousands) that I use for reference purposes. They are the ones I listen to first when evaluating new equipment. I know every nuance of these records. Listened to them hundreds of time.

First up - Sue Raney on the Discovery label. The SE allowed me to hear the volume of air, and the force and reduction of force that was coming out of Sue Reney's chest and up through her throat. On the third cut, there is a triangle that the percussionist delicately hits. With all previous amps, I thought there was just one triangle. Turns out, there are three. For the first time, I could hear the slight difference in the notes. That was hidden before.

Second up- Sammy Davis Jr. Sings. Laurindo Almedia Plays. Reprise RS-6236.
Again, like the Sue Raney album, the air coming out of Sammy's chest and across his vocal chords and all of the subtlety of that was in his total control. Then, I realized that all of the really great singers do this and that's why they have the great instruments they do.
The guitar work being done here by Almedia is superb. Not my favorite guitarist, but on this album his playing grabs you by the emotions. BUT, through this amp ... a different world. The leading edge of the notes and the subtle decay of those notes make this album extra special now.

Keep in mind that we are only two hours in on this new amp at this point. The sound stage is still constricted and the 3-D imaging is on a par with the Classic 60, and not as good as the old REF-3.

Over the course of the day, I continued listening for a couple of hours each time. The more time that passed, the better the amp got.

Next Album .. about 4 hours in: The Norman Luboff Choir .. "But Beautiful" Columbia CS-8114. This is a demo quality record that has a tremendously wide sound stage. Its fun. The chorus is spread behind the speakers and goes from wall to wall. And now, I'm getting a 3-D image like never before. The articulation in each chorus member's voice has never sounded better ... not even close. There is a female soloist named Betty Mulliner who has her place behind and just to the left of the right speaker. With all other amps I've had, she has sounded diffused. The original REF-75 brought her out of the mist ... but not like the new SE. Now, she is in total focus and its like I can see her head move and hear her lips smack. I can get a true sense of her personality. Same thing on every vocal record I played today. Get this album if you like beautiful classic pop music from the 40's and 50's

Next: John Williams Paganni:Guitar trio - Hayden: Guitar Quartet. Columbia MS 7163. Again, this is a sound stage spectacular. I love this album, not just because I'm a classical guitar freak, but because its a great test of equipment when looking for correct tonality. Like the once vague female soloist in the last album, there is a cello in the right rear of the sound stage that keeps getting more refined as my system improves. With the REF-75SE .. gone is the vagueness. All of it. That cello is now in the room, tonally correct, and very moving. And John Williams? For the first time, I heard the strings of his guitar vibrate. The decay of the notes seemed to last forever. How may accolades can I pile onto Mr. Perfection on the classical guitar? Buy this album, you won't regret it.

Finally a mono record to die for: Dave Brubeck's Jazz Impressions of The USA." This record never came out in stereo. Near as I can tell reading the liner notes, it was recorded sometime in '55 or early '56. This is Paul Desmond at his very best. Not as hard boppin' as the Oberlan College album ... but man 'O man ... the second cut "Summer Song" has Paul Desmond right there in the room. Its never sounded better than today.

So, that kind of gives you guys a hint of what was going on at my place today. The amp burned in for 12 hours, and toward the end the sound stage has filled out nicely, dynamics are startling, musicians were in 3-D relief, and most importantly to me, the instruments all sounded tonally correct.

My source tells me that at this point, the amp is only scratching the surface. He says ... wait until 200 hours has gone by before seriously writing any review of the new amp. I couldn't wait ... its that good. Bottom line for all ARC REF amp owners ... even at this early stage, I can honestly say... the SE kills the old amp. Go for the upgrade.
128x128oregonpapa
Oregonpapa, I just went back and reread the entire thread looking for a bit of info and didn't see it. My apologies if I missed it.

What speakers are you using?

Also, this was a fairly testy thread wasn't it?
Here's my system:

Turntable: Original Well Tempered - modified. Tonearm rewired with Cardas wire. Custom belt by OriginLive. (highly recommended.)

Cartridge - Audio Technica OC9 MK III (Love AT cartridges) Besides being a neutral sounding cartridge, its terrific on mono records. Really gets down in the groove. Groovy!

Phono: ARC PH-8 Retubed with Upscale Audio tubes.

CD player: ARC CD-7 SE with factory upgraded power supply.

Preamp: ARC REF-3 Retubed with Upscale Audio tubes.

Amp: ARC REF-75 SE

Speakers: Legacy Signature IIIs - Cardas copper binding posts. 94db efficient. Can be driven with a 20 watt receiver or a modified Dyna 70. The REF-75 SE just coasts with this speaker. The Signature III's are no longer in the Legacy line. Too bad - its a winner.

Room treatments: Shataki Holograms - two against front wall, two in rear. (dramatic improvement - highly recommended)

Speaker cables: Music Advancement Company (MAC) biwired.

ICs - ARC balanced ICs between CD player and Preamp & between preamp and amp. Yes, ARC sold their own branded ICs a few years ago. I was lucky enough to score the last two.

Nexus ICs from Turntable to PH-8 & PH-8 to REF-3.

Power cords: Custom built by Dave Magnan.

AC filter: Custom built with modified filters built by Dave Magnan.

Wall sockets - upgraded audiophile quality.

VPI record cleaning machine.

Shelving: Custom built. Each shelf consists of three layers of wood with dampening material between each layer, then nicely finished with formica.

Custom platforms are under each component consisting of two layers of heavy, finely finished granite material with a thick layer of dampening material between the granite layers.

Mapleshade 2" thick maple platforms under each speaker. The platforms are spiked to the floor through the carpet, then the speakers are spiked to the platforms. (huge improvement in speaker performance.)

As you can see, there has been quite an effort to control micro vibrations in my system. The theory is ... the only thing we want vibrating in our systems is that little wire that protrudes from the cartridge body. This effort has paid off really well. It accounts for a lot of the 3D imaging and the "see through" quality of the system. ARC has been at the forefront in this area with their equipment. ARC owners are very much aware of these efforts with internal damping material and the tube dampening rings.

I use PRO Gold contact cleaner and contact enhancer on all connections including tube pins. Also, I periodically demagnetize my cartridge with my trusty old Sumiko cartridge demagnetizer. I make my own record cleaning fluid that I would put up against the best. I've tried most out there.

Happy listening guys. Stay tuned, more record review to come as the REF-75 SE continues to break in.
Incidentally, the (to me anyway) stupid high prices of some gear is not so you can "get one whenever you want," (a patently lame reason, but sort of funny) but simply to supply company owners/shareholders with as much profit as possible which is simply the way the business world works.
Wolf ...

And without "profit," the doors don't stay open, R&D shuts down and the next great product from that particular company ceases to come forth. When company owners and shareholders benefit, we all benefit. The only way they can continue doing business is to please the TRUE BOSS ... and that is we, the customers. Just free market principles at work. I have yet to hear quality stereo gear that has come out of Cuba, East Germany under Soviet Rule ... or Communist Romania. :>)