Showing posts with label Brand-Clearaudio. Show all posts
Showing posts with label Brand-Clearaudio. Show all posts

28 September, 2016

Conrad-Johnson vs EAR; Wilson Alexia

In front of the CJ GAT preamp are the EAR 509 MkII monoblocks, much smaller in size, but not in sound, than the CJ LP275 monoblocks. In the foreground are removed TAOC stands. Click to enlarge.

Home Visit: Conrad-Johnson vs EAR; Wilson Alexia

Talk Tweak: Ditch your Amplifier Stands; TAOC

EAR Overview

EAR 509 MkII Resurrected While my EAR 912 has been making the rounds and seen active use, my pair of 509 MkII have been idling for over ten years - until recently, when my friend WoSirSir expressed interest in them. Lo and behold, at my old place they worked a charm with my Tannoy Canterburies! We both agreed they sounded excellent, with a clear and controlled sound.

Then I met up with Andy (one of the trio covered in this blog, last featured here), and things blossomed into a second day of "slug-fest"! Don't you get too excited; it did not last long!

Resident System:

Turntable: Clearaudio Statement/Goldfinger
Phonoamp: Clearaudio Statement Phono
CAS: Aurender N10
DAC: EMM Labs DAC2X
Preamp: Conrad-Johnson GAT MkII
Amp: Conrad-Johnson LP275
Loudspeakers: Wilson Audio Alexia

Challenger Amp: EAR 509MkII
Challenger Preamp: EAR 912

SONIC NOTES
  • Andy's Previous Magnepan 3.7 Setup As reported, Andy was previously a horn and SET guy. Between then and now, he had a period when he used the Maggie 3.7 with largely the same analog and CJ gears, and I had heard them. For CAS, he was still using the Weiss and as before I didn't like it one bit. Analog was much better, though the Maggies as expected lacked deep bass and had a mid-bass leaness (preferred by the ribbon/ESL crowd).
  • Wilson Alexia  It was immediately apparent that the Wilson's sounded very much meatier and heftier that the Maggies. And I mean that in a good way - images were just fleshier and more real, and the bass had real kick. Although a trace of bass bloat remained in this large room, which is unfortunately closer to a square than a rectangle, it was the best sound I had heard yet at Andy's.
  • CAS Aurender and EMM Labs To my ears, the Aurender N10 and EMM Labs DAC2X combo is much to be preferred to the parched sound of the Weiss. Fleshier, more naturally flowing - in a word, less digital.
  • Clearaudio Statement Phono While the analog sound is clean and good, I cannot help feeling this phonoamp, like the turntable it partners, lacks rhythmic verve. Andy likes it for its remote controllable features (like equalization curves), but for me it is just plain spoken.
  • Challenge: EAR 509 MkII vs CJ LP275 While we were chatting on the first day, I was a little surprised that Andy expressed interest in hearing the EAR after I told him of its excellent bass control. And so it happened on the second day! Despite having only just one hour of playing after a ten-year hiatus, the EAR 509 MkII trounced the actively in-use CJ LP275 immediately and in convincing fashion. The bass was simply tauter, more controlled and extended lower! The CJ LP275 uses 8 tubes per monoblock, but did not sound more powerful than the EAR's simple pair (and Andy matches his tubes with a top-notch tube tester); also, it is actually quite light and easy to lift, indicating the light weight of the transformers! Andy was impressed! See "Andy's Decision" below!
  • Challenge: EAR 912 vs GAT MkII The sound was quite similar, but the EAR 912 had a more subtle and easier musical flow. Andy agrees, but loves the remote facilities of the GAT. If you ask me, the EAR 912 is the better preamp, full-function at a much lower cost; there was no area where the GAT could manage to surpass. One can only gasp at the ridiculous price some hifi manufacturers charge, or marvel at how reasonable EAR gear is!
  • Andy's Response Man of Action! Andy immediately ordered the EAR 509 MkII! But he has retained the GAT for its convenience.
  • UN-Tweak At first, Andy has his amps on his surplus TAOC stands (foreground). Since I have never heard amplifier stands do any positive thing, I asked for their removal. Bingo! More coherence and better bass (here is yet another example: "...like a good audiophile, SG had almost all his stuff on heavy (wood) racks and gears were placed on various tuning devices (which I usually avoid). The Goldmund Telos were placed on Nordost Pulsar Points over a Solid-Steel amp rack...JC, a previous user of Goldmund, suggested removing the Nordost devices. It took a while, but the result was mind-boggling. Music became much more lively. Then we proceeded to remove the amp rack. With the amps on the floor now, there was further improvement, but not quite of the same magnitude as removing the Nordost devices. So much for isolation devices (at least for power amps)..."). Andy's preamp is also temporarily sitting on two TAOC's, but in this case, as I had reservations about putting it on the floor (preamps are much more susceptible to vibrations than amps), we slotted two slabs of solid wood between the preamp and the stands, and sound again improved.
 Thoughts
  • Things at CJ are definitely not like before (not that I have been that much of a fan). The light weight of the LP275 is a joke - indicating transformers are smaller than before (similarly, Audio Research trannies now are smaller). Those were the days, when their classic amps like the Premier One had really heavy transformers. The 8x 6550 per side did not feel very powerful. Likewise, I also think the GAT is ridiculously over-priced for what it is.
  • Wilson Audio is finally getting better. I have lost count of how many times I have listened to generations of Watt/Puppy, but I know I have never heard them to total satisfaction! I have also listened to a large number of their larger offerings, like Alexandria, Maxx etc, and they never fully impressed either. That started to change when I heard the Sophia at the HK hifi show. Now, Andy's Alexia is not perfect, but it has potential. Think of all those hifi writers (like TAS) who praise each iteration - hey, should the customer fork out so much money for Wilson to move slowly on his learning curve? Basically, most Wilson's were (some still are) incoherent, and the hifi press indulged him instead of warning readers.
  • EAR's Tim de Paravicini is my hero. Great designs, compact size, powerful and controlled sound, all at much more reasonable cost than most manufacturers.

06 July, 2015

Langevin 102 Preamplifier


L: Langevin 1961 Catalog, from internet (Preservation Sound); R: system upstream. Click pics to enlarge.

Letter from NYC (42) 2015 (4): Langevin 102 Preamplifier - My Reference System III
Review: Elekit TU-8500, Part VI Use as Buffer Amp
Review: Lepai 2020A+, Part II

Links relevant to this article:
Reviews of Lepai 2020A+, Part I; Dayton B652, Part III; Almarro M1A
Phonoamp Shootout (with Parasound JC3, Part II)
Elekit TU-8500 Review Part I (with links to II-V)


Casual got Serious
Compared to years past, I had less spare time during my stay in NYC this year, and what time I had were piecemeal. My large systems (see equipment list in sidebar) saw relatively little use compared to my "Casual System". This left me to ponder a drastic upgrade of the system to reference status - "casual" should also mean quality!

Acquiring the Vida, which can hook up two turntables in Reference System II, freed up the Parasound JC3. Also, I have long wanted to set up my professional Langevin preamp, which has enormous gain and . So I got the idea of using my Elekit TU-8500 as buffer amp, to control the listening volume. All sources are connected to the TU-8500 System is now as follows:

Digital: Sony XA-5400ES SACD/CDP
Turntable 1: Clearaudio Concept/Ortofon Kontrapunkt C
Turntable 2: Audio-Technica AT-PL120/Raos MC Mono
Phonoamp 1: Parasound JC3
Phonoamp 2: Elekit TU-8500
Buffer Amp: Elekit TU-8500
Preamp: Langevin 102
Amp: Lepai 2020A+ or McIntosh MC-2200
Loudpseakers: Almarro M1A or Dayton B652

Click pic to enlarge.

Langevin 102 preamplifier

Considering the innumerable roles audio play in our lives, it is appalling how poorly audio history is documented. Which is why we all should contribute a little.

History The best known Western Electric is the best documented, but its various spinoffs are less fortunate. Langevin is the most important of these (actually incorporated much earlier and long supplier to WE), but its history is barely documented on the internet. Its very close ties with WE is immediately obvious from the similarity of its products (at its peak in the Golden Era) to WE. The products are superior in every aspect, and deservedly escalate in value.

The professional world in which most Langevin products are used provide tidbits of information (see here, here, and here). Langevin products and consoles were widely used in recordings. The company lasted into the transistor age, and its name was later acquired by Manley, which did not seem to do so well by it.

Documentation Descriptions and Schematics on the 102 series (A-G) are available in original Langevin literature from vintagewindings. My unit looks to be the 102-B/F fitted with the optional 103-B (for more info on 103 A-C, see vintagewindings) input panel and has a matching 201 Power Supply. Also, from the technicalaudio site, you can get more useful Langevin info: Description of Various Line Series; 1952 Catalog.

Acknowlegement: most sincere thanks to the folks who selflessly put these valuable info on the internet for free. Salut!

Design and Tube Complement The 102 is similar to the more famous WE 106 preamplifier, which employs the famous WE 348 and WE 349 tubes. The 6SJ7 is electrically identical to 6J7 except for pinout. Mine was re-wired for 6J7 (with its top-cap), hence enabling use of WE 348. And WE 349 can be used in lieu of the output tube 6V6. Output is similarly transformer-coupled. The 103B panel is not used. Right now, I am not using WE tubes, instead Sylvania 6J7 and National Union 6V6. The 201 Power Supply can use both 5Y3 and 5U4 types. I have used both but settled with the Tungsol 5Y3 for less heat, as sonically it is as good as the We 422. My unit was restored by Master Huang 臺北黃老闆 in Tapei, who has restored numerous WE units, including a pair of WE 124 that I have. He has very high praise for the unit.

Gain Like the legendary WE 106, these being professional equipment not originally designed for home use, the gain is enormous. I am not sure of the spec but the 102A is in the vicinity of 55 db! My unit thus is configured for both fixed and variable outputs (I use the former). Hum is therefore a potential problem, especially with high efficiency speakers. It would be interesting to try out this for phono direct in (after only RIAA application and sans phonoamp)!

Setup and Sonic Impressions
  • Settings The setup has three volume knobs, and setting is somewhat aribitrary, arrived by listening. The lepai 2020A+ was used as an amp, with volume around 12 o'clock. The volume of the Langevin (fixed output) was around 11 o'clock. With these settings, the volume knob of the Elekit TU-8500 hovered around 10-12 o'clock. The interconnect from the Elekit output to the Langevin input is very long (not desirable but of necessity), around 15 feet.
  • General Sound I first listened to the system using the dirt-cheap Lepai amp, and the result shocked me, that is how good it is. I would think most of this is attributable to the excellence of the Langevin 102. The sound has strength in every department. Most importantly, it is superbly lively. Indeed, it gives my Reference System I (always cooler than reference System II) a run for its money, lacking only power and bass heft.
  • Langevin 102 Particularly impressive is the pristine high frequency. A miracle, in fact, considering the input is through a very long interconnect and a buffer amp. I think there is not a little of the single-ended 6V6/349A quality here. You may want to know older Chinese vintage tube lovers dubbed the 6V6 tube 琴王 the king of string instruments. The sound is very similar to my WE 106 (in which I use WE 348A/349A), and that is the highest accolade. In passing, note too Shindo used to use the WE 349A in his Giscours. As with the 6V6, the sound can turn lean with bad recordings, but with most material the midband and bass are beyond reproach.
  • Elekit TU-8500 I rolled in RCA 6201 black plates and the sound was so good I let them stay. So users should try 12AT7 family tubes too! Set to unity gain (actually 1.1), the Elekit performed flawlessly as a buffer amp. Its neutrality allowed the full flavor of the Langevin to emerge. Commendable! Too bad I do not have the iFi iTube on hand to compare (next year perhaps). Not surprisingly, it also functions very well as a phono amp for the Raos MC Mono cartridge (shall be covered in a coming article). With this, I think I shall conclude my series on this gem.
  • Parasound JC3 As mentioned in my last article (roll down), with an Ortofon Kontrapunkt C, I played Willy Deville's Miracle (acquired after hearing it played in Audioarts) and was compelled to listen to the entire side, a luxury for me these days. The high gain of the JC3 is not needed in this setup (indeed a detriment) but its quietness was again proved in this very high gain setup - remarkable!

Article finished in HK.

05 April, 2015

Overview: Klipsch Classics, Part III - The Best La Scala System I have ever heard

Top pic taken from the sunken Living Room. Bottom pic taken from elevated Dining Room. Click to enlarge.
 
Overview: Klipsch Classics, Part III - The Best La Scala System I have ever heard
Yumcha Diaries: April 4, 2015
Talk-Horns: Klipsch, the One-Stop Solution, Part III

Note: Klipsch, the One-Stop Solution Part I treats La Scala in depth; Part II is an Overview of the series; Part IV is on the later Quartet/Forte.

No, it may be the best system of any sort I have heard (whlee thinks so and I tend to agree).

Image result for stokowski rhapsodiesAfter yumcha on Saturday, whlee, trazom, captain, jules, oozz (Edwin) and I went to Bernard's spacious home in Clearwater Bay. Regrettably, ama333 did not join us. It turned out to be one of the happiest days in my HiFi life!

It is very rare in HK to encounter a split-level living-dining room. Here, the dining room is elevated. The total area must be close to 1000", and ceiling of the living room is at least 15' tall. Equipment:

CDP: Naim CD5XS; Ekco EV55DP
Turntable: Clearaudio Concept MC
SUT: Audio-Technica AT-1000T
Preamp: Marantz 7 (re-issue); also (April Music) Eximus DP-1
Amps: Marantz 9 (re-issue)
Loudspeakers: Klipsch La Scala (alnico; 16 ohm); also JBL 4343

Dvorák & Walton Cello Concertos
How Two Cousins came into our HiFi Lives Let me take a detour first and introduce you to the brothers. About a year ago, Alfred, aka ama333, joined the discussion thread entitled JC's Letterbox on review33.com. He finally came to our yumcha and now is a regular. Alfred uses the Klipsch Belle you have heard about previously, as well as the JBL 4344. He then brought his cousin Bernard to yumcha too. Alfred wanted to hear my La Scala, so one day the two cousins came by my old house and I once again connected my alnico La Scala after many year's neglect. I was a little surprised that from the word go the La Scala gave all music all the flesh and blood they needed. As they say, the rest is history.

Bernard immediately took a liking to the big bold sound of the La Scala. He also liked the vinyl playback so much that soon after he bought his vinyl system (the SUT actually belonged to his cousin). And some time later, my La Scala pair became his!

Previous visit to Bernard Before the La Scala took over, it was the JBL 4343, placed not in the positions you see now in the pics, but along the long wall, flanking the equipment rack and the AV speakers on stands (facing the beige sofa). Sound was excellent, with the vinyl outstripping the digital by a substantial margin. In turn this impressed our friend trazom so much that he took up vinyl again (see here) and now is happily cleaning and spinning his very good collection of pop LPs!

Initial Sonic Impressions
  • Initially the La Scala's were placed along the long wall, facing the beige sofa. When we arrived, Bernard was using the Ekco CDP's analogue out into the Eximus DP-1 (used as preamp). Sound was a bit pale, treble a touch hot and the whole thing just did not have the juice the La Scala is famous for. In fact, I thought his previous setup of JBL 4343 was better.
  • Eximus DP1 WE suspected some of the flat and white quality to the Eximus DP1's preamp section. Our suspicions were confirmed when the Marantz 7 was swapped in; immediately, the sound gained much flesh and tactility. Eximus has been well reviewed by the audio press (see official website) but this its performance here has been disappointing. We happened to have the Sokolov Salzburg Recital CD and LP around. The LP fared better but the CD still should convey more of the fanciful and mercurial character of the master pianist's playing.
    Image result for mingus ah
  • Ekco CDP Ekco used to be a radio and television manufacturer. The official website gives a detailed history of the company up to the 60's but did not go further and did not mention that it is now part of the Chinese IAG group. In fact, to my eyes their products look like Chinese products in new skin; this is certainly true of the round window displaying the tube in the EV55DP. We did not like its somewhat sluggish leading edge. Changing to the Naim CD5XS brought much improved articulation, rhythm and pace. Sokolov became a more subtle pianist but still not quite what we know he should sound like on this popular album.
  • After all that work, sound was much better. I forgot but trazom reminded that we had made the same, exact changes to the system last time to improve the JBL's performance. Still, sound was not quite what I know can be obtained. On the Mingus Ah Um re-issue LP, while the sound was decent and full of details, the brass should sound more throaty. Bass was somewhat woolly and truncated and sound did not fully open up and project like a good horn should. The La Scala's sounded more "confined" compared to when they were in my house - something is waiting to be let out here.
  • I did not expect Bernard to say "yes" when I suggested that he should try the La Scala's placed along the short "wall" (the windows). Well, we men of action just jumped up and did it. Easily firmly gripped, La Scala must be the easiest loudspeaker to move around. well, we just plonked them down and did not fine-tune. Again, the rest is history!
PATRICIA_BARBER_-_COMPANION_(180G_33RPM_AND_45RPM_Vinyl_2LP)"Sonic Impressions (after Re-Placement)
  • From the first note, the La Scala I knew came back; everything bloomed and birds sang! Everybody had a big smile and the party began! The sound was just so much BIGGER!
  • With pop and jazz, the sound was truly live, and difficult to fault. The percussion and bass attacks of the Let It Rain on Patricia barber's Companion re-issue LP were perfectly rendered, fast in transient response, colorful in timber, an assault on the senses. Most importantly, they sounded like real people right there in the living room.
  • With chamber music, as in jazz, the muscians were palpably present in the living room. We played a mono Casals/Horzowski CD (oop; Philips) and Casals was with us, his inimitable tone enchanting.
  • To us concert lovers, the sound of the dining room was even better, and exactly conveyed the sound of the concert hall balcony. With the two Living Stereo re-issue LPs, Stokowski Rhapsodies and Piatigorsky Dvorak Cello Concerto, the full orchestra were laid out below us. The solo passages and horn tutti were absolutely faithful facsimiles of the concert experience from above. whlee was absolutely delighted, and I haven't seen him like this in years!
    Image result for 王菲 天空
  • For a final cut, we played 王菲 “天空”. This cut usually sounds rather white and monotonous in the majority of setups, but here it is fully fleshed out and atmospheric. What a fitting end to the day,  “天空” is "The Sky" in Chinese, and the La Scala serves as a window to it!
  • Lest you think I have lost my faculties for judgement, I am obliged to point out the imperfections in the system, especially when it comes to classical orchestral music replay: The mass violins need an expansion in scale and nuance; the bass, while good, needs to reach a little lower; and just a little more ease at climaxes would not be amiss. But I think these can be easily achieved with further tuning.
Thoughts
  • There is no question that speaker choice and placement are the most important factors in one's system.
  • Placement The most valuable given asset is a good room, and Bernard is more fortunate than most of us. Yet, the previous incarnations before re-placement serve as reminders that our habits (or constraining factors, such as WAF) are often (understandably) at odds with the needs of the system. In a way, we are our worst enemies. Do not fight or neglect the room!
  • Speaker Choice Once again, the experience shows that horns are irreplaceable, and this was exactly what oozz and I talked about on our long way home. There is no better conveyance of the live music quality than horns (oozz's own German Physiks is a variation on the horn). This setup is not expensive, yet it gives more of the illusion of the live event than systems we have heard that cost millions of dollars. Also, the simplicity of the system should give tweakers much thought! So many people spend megabucks on power treatment, cables and tweaks etc; yet all they get are frustrations. Attend to the basics!
  • Bigger rooms breathe better There is no getting around it. The bigger the room, the better the sound, provided  the equipment is up to it (no better choice than horns). We have heard good efforts on Maggies and planars, but they are completely dwarfed by this setup. I agree with whlee that this is overall the best system we have heard.
  • It is really gratifying to hear a system truly transformed. People claim all sorts of improvements, but epiphanies do not come so often without drastic measures, usually not voodoo but attention to basics.
  • What I would do In this system, were it so fortunately mine, within aesthetically acceptable limits (and WAF) I'd fine-tune the placement. I'd also try to drive it with less power (SET or, as whlee thinks, low-powered PP amps). I think even better sound can be easily achieved without much cost.
  • The Klipsch Lesson Once again, the experience confirmed one of my convictions, detailed in previous articles. Well executed, a Klipsch system outperforms most ad-hog conglomerates of arguably superior components. The coherence is compelling.
  • Is this the best system I have heard? Not in all parameters, but in terms of the live experience, it is (surpassing my own efforts)!
What A Happy Day!