Pretty deep soundstage and fast sound.
I believe that Orchard is a really nice class D amp at reasonable price.
Unofficial Orchard Audio StarKrimson Ultra Amplifier Owners
Obviously all the "Armchair Engineers" can feel free to either deficate or praise your thoughts on GaN LClass D Amplifiers even if you’ve never heard one but feel to have an opinion. Then there’s the brainwashed Placebo Effected Guys that feel Class D just ain’t there yet. You can post here as well while the rest of us laugh. It’s usually the Geezer crowed that has a n issue with Class D. Anyway here’s my repost :
I actually have the Orchard Audio StarKrimson Ultra on loan for the Arizona A/V Club to get passed around. Leo Ayzenshtat is great to work with and sent us the original StarKrimson (then BOSC) Amplifiers and power supplies last year. Yes, it was a kludgy setup but sounded so good I sent all my PS Audio M700’s & an S300 off to The Music Room ! After I DIY’d some of his GaN boards, they went up in smoke because of a not recommended Power Supply bring up method I had going (long story). But they sounded amazing when I didn’t let the smoke out of them.
Fast forward to the StarKrimson Ultra just received for my review (YouTube & for the Club & Leo). They are amazinger sounding. He’s hit it out of the park again and then some. All the issues I had last year have been resolved. No break in required either. These are out of the box perfect. Understand that I’m an all Tube Guy and I will do a comparison between the currently direct connection form my PS Audio DSSr. DAC into the Ultra and the DSSr. into my BAT VK50-SE then head to head out to the Ultra and my Jolida 3502p KT150 Tube Amplifier.
Speakers in my Evaluation :
KEF R3
Bose 901 Series 1 from 1968
my Homebrew DIY Open Baffle Speakers
KEF 105/3 modified
Future plans of mine are to DIY from blank PCB’s 5 Ultra Amplifier Modules for a kick ass Home Theater setup and for the Summer, use two of those 5 channels for the main L & R. Fall/Winter/Spring would be back to the Tubes for the L & R while the Center & Surrounds would be powered by the Ultra’s. Surface MOunt Soldering for me is easy but the BGA devices will have to be put on by a board shop.
The beauty is you stop listening to the Amplifier and start listening to the music very quickly.
https://orchardaudio.com/shop/ols/products/strk-ltr-mdl
https://orchardaudio.com/stereo-ultra
The ClassD Audio stuff is pretty good too (haven’t their GaN’s) through a friend who had a 250Wx2 built for him.
My Evaluation rig is setup so that nothing colors or influences the (no BAT VK50-SE in the chain - until all reviewing is done this way first)
https://photos.app.goo.gl/ZPGJR1RatZf2ZrzW9
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I've used the PS Audio M700's and M300's for over a year. It was the sound of the Orchard Audio Amplifier's that won me over. I've already fooled people by teling them it's a Class A/b Amplifier with interior heat sinks for about 30 min. of listening and they believed me...LOL ! I'll be doing a comparison later in the week/weekend with my Joilda 3502p and I'll let you folks know my findings. My final listening session will be adding my BAT VK50-SE in front of the Ultra and hear what happens. |
@ricevs Get some serious shelving and footers....will blow your mind. Get all the cables off the floor.....way more open sound. Lots to do. Nah...that’s all crap talk. But I do have my AC wires separated (for the most part) from the line level (all XLR BTW) & Speaker Cables which are Tri- Wired into my Open Baffle Speakers. I also have Stranded 10AWG Cable running form the Electrical Panel (20A Breaker) into my rig with absolutely no power conditioners or regenerators. NO fancy "Audiophile" Switches, Cables (mine are of the shielded variety from Amazon Basics & the now defunct Frys Electronics) or Ethernet regenerators. That’s all Placebo Effect & Snake Oil that’s been proven time and time again. |
I’ve been doing this Audiophile Crap for over 36 years (High School) and lots of failed and successful DIY projects. Mostly Speakers and some electronics stuff. I just won’t spend my hard earned money (or credit) on pure snake oil. Instead, take that money and by more music and DIY where it counts the most. My current system is :
You sound like a noob who hasn’t had much experience. It’s ok, we all had to start somewhere…….. |
I've had my Starkrimson diy amp, bought via ebay, for 2 months now (bought for $1,100!). Not the ultra but his standard modules. Since then I've sold both my tube amps as I'm going Gan all the way now. Sound so good it makes me tinkle. -- The one downside is the low gain, at 17db. Only matters when playing vinyl. However, my Nad C658 has Dirac included up to 500hz. I created the filter for my room, and I can adjust the filter gain. So that one issue is solved. Ergo: that's one way to boost gain for other vinyl playing owners out there (and dirac). -- I'll prolly buy the ultra next year out of curiosity; won't be able to resist. |
I wonder how many people have ever heard a Spec amp. https://shop.donbetteraudio.com/collections/amplifiers/products/spec-2 |
Update after one year with Hypex SMPS 1200 Power Supply version. I’ve gone ahead and ordered and installed 5 Rev.3 Ultra Amplifier modules from Orchard’s website and a 1500VAC Toroidal Power Supply from Antek. This is the Quietest Amplifier I have ever built or owned. I even added another 40,000uF of Kemet low ESR/100V Capacitors in addition to the Antek’s 15,000uF Epsilon Caps. A very simple Power Supply with what is now the State of The Art in GanFET (GanSystems Chips) Amplification. But ya still need that BAT VK50-SE Tube Preamp in front of it Eh ! 👍 |
I dropped at my friend's hous Friday with Schitt Freya+ and Starkrimson.
It will be nice if I have chance to audition Atma D before making final purchase decision.
Thomas |
https://youtu.be/ecBw3Jm-Rhs
This one was driven by Line Magnetic 508.
My friend's voice is heard of his frustration with his cell phone
Although I like my LM508, I turn if off after two hour's playing.
Thus I am looking for Class D amp for longer casual listening.,
So far my impression of Orchard Audio D class amp is favorable with nice transparency and details at reasonable price.
Thomas |
@shkong78 is that a version of pipe dreams you have there? |
I brough down two Lanshce 4.1 speakers (85lb) each from third floor by myself.
It was lot of work.
The only helping hand is the elevator in my house without it I could not move them.
I bought Lanshce 4.1 speakers new paying 50k$ on 2006.
It has plasma tweeter and 99db/w claimed efficiency(real efficiency may be 95db/w).
I used to drive this speaker with Silbatone 300b amp fitted with WE 300b made in 50’s.
But after movijng to larger listening space, Silbatone could not do it.
Thus I had tried Cronus Rogue Magnum II for a while and then Line Magnetic 508 since 2017.
But after I got Altec A7, 2021, I got enamored by its unlimited dynamics.
Thus Lansche got a break in the attic.
Then after I assembled Scaena 3.2, I use main tower of Scaena 3.2 for upper frequency, and use Alted basshorn for bass using active by amping.
12 3.5 inch mid drivers of Scaena 3.2 has no passive network. 9 ribbon drivers are also connect with simple low pass using a capacitor.
Thus Scaena 3.2 is very revealing speaker.
But plasma twetter of Lansche 4.1 give slightly more details.
I drive Lansche 4.1 using Starkrimson from 180 hz up while Altec basshorn and two Scaena 18 inch subwoofers are still engaged.
Tomorrow, I will try to drive Lansche 4.1 using Starkrimson full range.
Thomas |
I got the feeling that Class D amp had improved a lot in musicality. |
I drive Lansche 4.2 with Starkrimson full range.
Thomas |
My writing is in head page of another forum. |
I attended Pacific Audiofest held at Seattle last July. |
I am back to one of my tube amps, Rogue Cronuns Magnum II fitted with Tungsol Kt120, vintage Telefuken 12ax7 and Amperex 12au7.
As good as class D amp is with transparency and details, tube amp sounds more lively.
But if you want no heat and limit of playing time, it is good to try class D amp. I usually turn off tube amp after two hours of playing.
In that way, i had used my tube amps without any problem for long time. Starkrimsom got very close to nice tube amp in musicality.
Thomas |
After auditioning Orchard Audio Starkrimson Ultra for 8 days, I had been listening to Line Magnetic 508 and Rogue Cronus Magnum II fitted with vintage tubes.
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Thomas |
@shkong78 thank you for the time and effort you put into this. |
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I have no idea, but jrizk13 states "My system worked flawlessly with a Parasound amp for 5 years but I plugged this in and I am unlucky to discover I have a grounding issue." I honestly don’t understand why I have never heard of this happening before when the only variable was a new amp? |