SonicSeeker

This amplifier delivers amazingly clean, dynamic and detailed sound with a stunningly realistic soundstage. This is a 3 Channel Power Amplifier which can be used for L,R and center channel for HT and/or multichannel music, or stereo plus a passive sub. It also has the ability to inhibit, turn off, individual amplifier modules so you can use any 2 channels as a stereo amp with third channel kept as a spare module. I purchased this amplifier for a home theater project that it appears I will not be doing at this time. I was curious to hear it so I hooked it up to my laptop and disabled the center channel utilizing it as a two channel amp. I removed my Pass Labs amp and plugged this in to my two channel set up.. I was extremely impressed. It.runs very quiet and cool, has very impressive detail and an excellent soundstage, fantastic bass. I wish I had a use for this as I find it very fulfilling to listen to Review links are listed below. Originally over $6000, this is an unmatched bargain for top sound quality. • Power Output per channel: 400W RMS continuous into 4 Ohms • Distortion THD: <0.007% at 1kHz at all powers up to 400W into 4 Ohms, • <0.03% at 7kHz at all powers up to 400W • Unbalanced and Balanced Inputs, switchable • Mains Voltage: 100 – 120VAC or 190 – 250VAC • Remote trigger switch between On & Standby • Command Functions: – Switch between On & Standby Full control via RS 232 or ETHERNET connection – Ability to inhibit individual amplifier modules via app – Amplifier modules indicate Normal, Over Temperature or Over Current condition via front panel LEDS $2050.00 plus shipping Add 4% for paypal Power Supply Universal switch mode Power factor corrected, fully protected, compliant in all countries. Halcro Reliability Assurance Service-this free app allows you to monitor each channel's statusincluding temp, voltage and current and amp can communicate data to Halcro directly over internet to diagnose any problem. Halcro has replacement modules available and amp's modular build allows it to be serviced locally. Rack Mountable or Free Standing http://www.stereophile.com/solidpoweramps/406halcro/#jcDqkoweIgJszguW.97 http://www.stereomojo.com/HALCRO MC20 POWER AMPLIFIER REVIEW/HALCROMC20POWERAMPLIFIERREVIEW.htm http://www.htguide.com/forum/showthread.php?14511-Halcro-MC20-Power-Amplifier http://www.audiophilia.com/wp/?p=3961 http://www.hometheaterhifi.com/power-amplifiers/power-amplifiers-reviews/a-secrets-amplifier-review42.html Wt: amp just under #50 (with all the original shipping material including robust double box about #55) Hgt 7" Width 17" Depth 16"

This is an amazing amplifier that has produced some of the finest music I have ever had the pleasure of listening to. I have enjoyed it immensely. I am going to upgrade to the unit that is a two piece design, 845 Premium, why not. It is in excellent shape and comes with a remote control. I am asking 4995.00 obo. I do have the original box if buyer would like to arrange pickup.

Thanks for the picture. I have wondered what they would sound like with the tweeter and mid horn up closer to ear level.

No subs please. I don't have the room for a sub.

You actually have yours elevated 14 inches. What changes did that produce with the sound. Do you have a picture?

I was wondering what different choices are out there for improved bass for the La Scala. No subwoofers please. If I am reading it correctly the Crites cast woofers are not an option on this model of La Scala's which is unfortunate, I really liked what they did for my Belle's. Is the ported lower section worth it. Do you have to change crossovers, I don't want to. I have Custom AA's I would rather leave alone.

I picked up these used LaScalas a while back but had to wait until we moved to Texas before I could set them up and listen to them with my Line Magnetic amp and other 2 channel gear. I finally had a chance to spend some serious listening time since moving. I was having an issue with the sound being a little closed off and in the speakers instead of in front or outside of them. The modifications I have performed are as follows. I replaced the crossovers with some custom type AA Dean G built crossovers. I replaced the tweeter and mid with the Crites supplied CT-120 and A-55G drivers. I just rewired the insides, drivers to crossovers, with some very nice silver wire soldered to the terminals on the drivers with Mundorf silver gold solder. Still a little off and compressed to me, good but not quite right. Then, and I slapped myself for this, I realized I had not addressed what should have been ridiculously obvious, which was the speaker terminals. My LaScalas have closed uppers with a terminal cup and the positive speaker wire also goes through a fuse. I removed the old terminals put some nice red copper terminals in their place and removed the fuse from the signal path. Needless to say the improvement was not at all subtle. I think I have eliminated most all of the weak links in my system now and it sounds as good as I have hoped for, just beautiful. I had mentioned this in my Line Magnetic thread but thought I should share this here.

I used Viborg red copper speaker terminals.

Ok not sure why I did not consider this before, a little too much happening right now in life with moving and all I suppose. So I decided to rewire my LaScalas, the drivers to the crossovers, with some really nice silver wire I had left over from a previous project. I also have the closed back with the RCA terminals and a fused input on the positive side. Well long story short I ordered some new RCA terminals removed the old ones and by-passed the fuse altogether. The difference is remarkable. The issues I was experiencing with the sound being a little closed off and in the speakers is non existent now. I am listening to Roxy Music Avalon, one of my go to albums when I change something and it sounds amazing , sounded good before the change but a little off, absolutely fantastic now. Money and time well spent. Now if I can just avoid being swept away by the ridiculous amount of rain we are getting right now here in the DFW area.

That's hard to hear. RIP

It seems to have helped, yes. Interesting.

Why did changing, reversing the speaker wires seem to help?

I will give that a try, reversing phase. I have tried Valvo and Tungsram inputs so far, Tele's will probably be next.

After a couple weeks of listening and getting used to the new system and house I find my music seems to be a little on the dark side. I would like a little more detail and clarity and I would like to tighten it up some. It is kind of like everything is inside the speaker a hair instead of out front and around. I installed the A-55G Midrange Driver and CT120, I also have updated AA crossovers from Dean, I have Tungsram 12AX7's Gold lion 300b's and SHUGUANG 845's It sounds quite good but in my never ending pursuit these are the things I would like to be better.

I received the Aircom T9 a few days ago and have been using it since and it works exceptionally well. I don't hear it at all and it keeps the amplifier cool. I am very pleased with the unit. Thanks for the info youthman.

I think the drivers are opening up some also, now that I am getting a few hours on them.. Beautiful sound.

I just installed a PS Audio PerfectWave P10 Power Plant a couple of days ago and the difference for the better is not subtle. I am surprised by this, don't get me wrong I expected an improvement or hoped for one, but I was amazed by the level at which it did help. I actually had the LaScalas hooked to the 4 ohm taps on the amp because I was being overwhelmed by the density in the music and the bass was a little bloaty, heavy, and lacking in control somewhat. I am back on the 8 ohm taps and all of that is fixed now. I hear notes now more than just sounds. More separation, more detail to the notes, they are more complete from beginning to end and they seem much longer in duration. I am happy. Oh and I found a new one for almost half price (still a chunk of change for something that's so not glamorous) so that's good also.

I am listening to Miles Davis Kind of Blue right now and it sounds amazing.

The one on the left

It is even shown sitting on my amp in the add. Exactly what I was looking for. I just ordered it. Thanks Youthman.

I just purchased a Marantz SR6012 for home theater use and these run very hot. I am sure they are designed this way but it still freaks me out. I have it in an open rack, see attached picture, and wondered if there would be any need or benefit to adding some airflow, as long as I don't hear it. What say ye.

That is a very good price on an excellent amp. GLWS Shakey

Well too early to give much of a review but..... So far I love what I am hearing. Excellent tone and a very full deep and clean sound. Only a few hours on them so far but I definately feel like it was a very good choice and well worth the price for admission. Very cool! Thanks again BC.

I really like it!, First time in a long time where everything I have played is at least "very" enjoyable, but for the most part everything is "outstanding". A little idol hum but could be the nasty power here in the city. A million air conditioners and ceiling fans running.

So nice.