Room total dimensions: 12.416’ back wall behind speakers, 2’ from left speaker outer edge to short hallway, fireplace angled wall (to right of right speakers) is 5.67’, adjacent wall is 9.75’ long, 9.583’ to front edge of sofa (soundstage middle sweat spot), 16.25’ to front of kitchen island behind sofa, 25.166’ from component rack front edge to kitchen backsplash, 10’ ceiling in living room, 8’ ceiling starts at kitchen island. Not the most ideal dimensions (certainly not the golden dimension custom sound room these speakers once occupied); however, there is little reflection issues (helps that wall paint is matte finish).
Apogee Acoustics Duetta Signature Series II Magnetostatic Speakers
My dad was the original owner who bought these speakers in 1988. Since the early 90’s I have coveted these speakers and looked forward to one day inheriting them. To me ears they are the best sounding speakers I have every heard. I acquired them around 2021. I’ve always favored their very organic, wall of sound energy (if that makes any sense). I think I got lucky and have the optimal core system built for these speakers. After 2 years in the waiting list, I finally picked them up fully redone by Bill Thalmann @ Music Technology and the results far exceeded my expectations. The imaging front to backs and left to right grew, transparency and imaging separation became more distinct while the bass response definitely increased from stock. The midrange/tweeter ribbons were replaced/upgraded with Graz KLM5s, the bass ribbons were upgraded/replaced with GRAZ-DSB-KLM, wire return kit, new bass foam that won’t break down, crossovers redone - all Sprague capacitors replaced with WilsonAudioCapX PPMFX, inductors coated with linseed oil, wiring, everything seated with epoxy to isolate from vibration; Cardas billet copper plated with silver with a rhodium flash binding posts, matte black hand rubbed automobile paint. I have them placed 28” off the back wall and 75” apart. They are as far apart and off the back wall as I can put them in this listening space, but they sound incredible nonetheless. To summarize wow!
Balanced Audio Technology VK-5i
Preamp bought in mint, practically new condition with the coveted VK-R3 billet aluminum remote. I just rolled the Sovtek tubes (1228/21) and replaced them with new production 8 x JJ gold pin 6922s and 2 x Mullard 5881s. Much fuller sound so far, but the tubes are still breaking in. Gain seems a little lower compared to the Sovteks so far.
Balanced Audio Technology VK-600 with BAT Pack
600 watt dual mono in a single chassis solid state class A/B amp bought on Audiogon in near mint condition. Packs a large amount of current in a 105lbs chassis that’s built like a tank.
2 x pairs stacked on amp binding posts (optimal compared to using a jumper). Jason Bloom match recommended specifically for the Duettas.
Silnote Audio Morpheus Reference II
XLR to XLR interconnects between amp and preamp; XLR to native RCA between preamp to audio streamer. Crisp, neutral imaging, large soundstage, tight bass are hallmarks of Duetta’s and strong attributes of Silnote’s interconnects sound signature.
Bluesound NODE
Latest Node streamer with built-in DAC that I bypass to my MHDT Orchid.
Sanus Systems EFA31 component rack
Silnote Audio Morpheus Reference Classic digital coaxial interconnect
RCA to RCA from the BlueSound Node2 streamer to the MHDT Orchid DAC.
MHDT Laboratory Orchid
With upgraded “classic” sound category Tung-Sol 2C51 DAC tube installed. The Tung-Sol recently ran out of life. I replaced it with a GE Westinghouse and have a backup Jan Phillips. I really like both tubes, but they definitely are distinctively different.
Audiolab 6000CDT CD Transport
Excellent solid built chassis with incredible sound quality that destroys most CD players several times more expensive at a steal of a price.
SoundCare Superspikes
Wireworld Supernova 7
Top of their line Toslink glass optical digital cable going from the Audiolab cd transport to the MHDT Orchid DAC. I’m extremely happy with the sound quality and it seems to match well with the new cd transport.
Furman Sound 8 Outlet Surge Suppressor
TeddyPardo Linear PSU
Bypassing the internal switching power supply of the Node (used for streaming only).
I appreciate the compliment. Who knows. I’m sure there are plenty of nice systems, but as we know they each will sound different and it often can come down to personal preferences. I’m very happy with my system though. I also plan to add a Teddy Pardo external power supply to the Node2 streamer soon. It apparently greatly improves SQ.
Am so happy that early next week I’m closing a purchase with Graz in Australia for all new ribbons, socks, wiring kit (includes upgraded ribbon tension clamps) and acoustic foam. They are being sent directly from Australia to Bill Thalmann at Music Technology in Springfield, VA so I can get an official spot in his backlog queue (work will be done in the spring). I’m also getting them repainted and possibly having the internal crossovers recapped by Bill along with inductor epoxy potting. My biggest concern is which freight company to use. I’m hoping to have the 2x4 cage reinforced and padding made a bit better in the original boxes instead of having custom crates made (based on Graz’ recommendation it will likely be around $600), but I’m getting a quote soon from Navis. I’ll of course make sure they don’t leave here until they are strapped together on the same pallet. I don’t want any repeat of the UPS debacle getting here (I’m not considering using UPS or FedEx of course since they are horrible with these sorts of shipments as I found out the hard way with UPS). Any recommendations around the crossovers and freight would be greatly appreciated.
I’ll add, Terry, who wrote the 6Moons review of the Orchid gave me his phone number to further discuss future tube options for when I feel like playing around with its sound. I’ll let you know what I find out.
Wow is all I can. The Orchid was a bit bright, as expected, out of the box yesterday. I was also using a brand new Silnote Audio digital coax cable. It still sounded noticeably better than the Node2’s DAC in every category. Listening to it today is just astounding. The brightness is already gone. Jiun, the chief designer at Orchid, told me to expect about 7 days for it to fully break-in and no need to leave it on all the time for optimal sound quality (tube). Break-in is only needed for the 14 caps surrounding the TDA1541A. Silnote Audio’s CEO told me yesterday that the cable only needs about 48 hours to break-in fully. He also said their speaker cables, “classic” in particularly, are now the reference for Magnepan. Magnepan recommends them to all of their customers. Great milestone for them. I have their entry level interconnects and power cables and couldn’t be more happy. Highly recommend them to everyone. Same goes for MHDT’s Orchid and their main U.S dealer Linear Tube Audio. All provided exemplary customer service and answered all of my questions thoroughly and in a very timely manner.
Agreed. I’m expecting a solid month of playing before I expect it will be mostly, if not completely, broken in. I bought it new. I don’t think the used tract is viable with the Orchid. They seem to be hard to find and are not much less than new.
I’ll let you know how I like the MHDT Orchid. I bought it a few days ago with the upgraded Tung-Sol 2C51 tube along with a Silnote Audio digital RCA cable. Both are scheduled to deliver on Monday. It will feel like Christmas morning on Monday!
Interesting you mention the MHDT Orchid. I zeroed-in on that tube unit. I also considered the MyTek Liberty, but then talked to MHDT and figured out as long as I use RCAs (analog out being key) the Node2 will perform the MQA decoding prior to sending to the DAC. Do you have the Orchid? If so, have you done any upgrades with the tubes or chip? Their lead designer thinks it’s best to leave alone since it was an early design where some capacitors are built around the td1541a. I am looking at buying it with the upgrade Tung-Sol 2C51 tubes. Want the “classic” sound as opposed to the “modern” sound one gets with the JJ6386 tubes, for example.
I thought about toe-in, but I held off. My listening seat is much closer than I would like. I miss when my dad had them setup in a golden ratio listening room he had built in WA state. The acoustics were amazing to where a particular Trifonic song emanated from 10 o’clock from the wall behind you (never heard that effect anywhere else). One of the brothers that created the album was impressed and wasn’t sure how he was able to produce the engineering (himself), out of happenstance. Trifonic - Emergence (album).
As far as the mask providence I need to check. My dad collects museum quality African art that originally served it ceremonial purpose. I’ll ask him again and let you know. He was in the Peace Corp in Niger in the 60’s. He has extensive knowledge of Africa. He recognizes specific languages/dialects and every once in a while startles visiting Africans in the Santa Fe area when he speaks their language :).
I’ll certainly share my playlists with you. My style is to amass and then listen with these particular playlists due to their sheer size. I’ve also got a recently constructed ECM-centric playlist of around 5,300 songs (and running) I’ll share with you. Let me know how you like them. I’ve got many other playlists with similar scale I’ll share once I get an idea of what your ears specifically levitate towards.
Thanks all for your recent posts. I’ll update once I get my speakers restored/upgraded with new Graz ribbons, magnet realignment, new glossy charcoal paint job and possibly additional internal bracing at the end of this year (likely leaving the internal crossovers alone this time around). I have added additional Silnote power cables with just the stock BAT amp power cables left. I’m also planning to add a tube MHDT Orchid DAC. It doesn’t do MQA decoding, but since I’ll be using analog output (RCA to balanced XLR) the Node2 will do the decoding prior to sending it to the DAC.
It’s definitely nice to hear that you too have a pair of these great speakers. It’s a very addictive sound. I have not even an inkling to change speakers. One day I’ll spend the $5k to get them upgraded and “modernized”. Do you have your system posted here?
I really appreciate the in-depth analysis. I’m sold. I’m so in love with the profile of my system that I am convinced that the Duettas with a modern upgrade will hold its own with any system available at most any price point. Now I just need to get it budgeted and pull the trigger. Thanks again!
Much appreciated. I’m now considering moving towards upgrading the Apogees to either Duetta Ultimates via True Sound Works Audio (Graz ribbons with stronger magnets for even lower bass) or upgrading with all Graz ribbons that includes replacing all of the acoustic foam (that is surely deteriorated) and tuning the ribbons to a precision that wasn’t available when the original Apogee existed (as well as replacing the magnets) via Bill Thalmann at Music Technology. The Ultimates are described as Duettas on steroids whereas the latter is updated and better than the original parts. but true to the original signature sound of the Duettas. A bit of a dilemma for sure!
Thanks all for the compliments. I haven’t dove down the vinyl rabbit hole yet :). My next step is looking at replacing my power cables with Silnote Poseidon GLs. I’m still trying to wrap my head around power cables. Always a measure of ear return on investment. Until recently it sounded a little crazy that they could have a sizeable impact on sound.
