213cobra

Responses from 213cobra

Tubed Monos for Focal Aria 948s
That may be a 92.5db/w/m speaker but it's a crossover intensive, multi-driver speaker. Few modest-power tube amps will resolve that Focal's problems (or challenges) and you don't want the mega-massed-tetrodes/pentodes 200w+ tubes monsters. What ca... 
A tube DAC with volume control, suggestions ?
Save some cash. mhdt Pagoda + a TVC (transformer volume control). Resolution & tone. The Pagoda isn't strictly a "tube dac." It has a tube output buffer connected to an R2R organic DAC with a discrete transistor DA stage prior to the buffer. I... 
Zu Druid 6
For a variety of reasons, doing a point release on Druid 6 with the concentric supertweeter FRD isn't just a matter of slapping the driver in a Druid cabinet where the hole for the Radian hasn't been cut out. So no comment yet on whether than can ... 
Zu Druid 6
Since Zu Definition has come up in this thread, I am posting an update here, also including notes about a new Dominance, as the two are closely related. I may start a new thread on Definition 6 and Dominance II, as well, but let's start here.Zu De... 
Zu Druid 6
The Hong Kong shipping fiasco seems unsolvable, so I am getting replacements in the next two or three weeks. Then I'll be done with my survey:300B/2a3 push-pull (interchangeable power tubes)Quad II CloneKlangfilm KLV-203 clone (F2a SE)Klangfilm KL... 
Zu Druid 6
My remaining amps are alleged to get sprung from chaotic Hong Kong shipping Oct 31st or thereabouts. Xiao Nan can ship reliably now through the mainlaing. So I should be able to complete commentary within a few weeks. But in the next few days I'll... 
Zu Druid 6
Marc,I did not have the same experience with 211 tubes as you describe, having listened for six or eight of various origin over the 15 years I've had various Definitions in my systems. I got what you describe through changes of caps and changes to... 
Zu Druid 6
Telefunken V69 Clones arrived today. Listening now. Two more amps overdue and coming to complete the survey.Phil 
Zu Druid 6
The Druid 6 reworked and improved every component in the Druid design, so the next Definition will leverage everything learned and developed in Druid 6. So expect the next Definition to be a "6" defining a common plane new generation for Zu's uppe... 
Zu Druid 6
Marc,I'll talk with Sean tomorrow or over the weekend. It's a simple procedure. You send him your Def sub electronics module + some money, he returns them upgraded. I speak with him. More on Def6 coming.Phil 
Zu Druid 6
Before you commit to Takatsuki 300B in your Golden Dreams, I encourage you to listen to the KR 300B globe glass. The standard tube is half the price of the Takatsuki and in my view twice as good. There's a newer premium KR 300B for the US market o... 
Zu Druid 6
Xiao Nan doesn't just wind his transformers. He builds the cores too. Materials are very inexpensive, even copper, where he lives, compared to the West. He uses premium parts but on the other hand he is not going for overkill where it's not materi... 
Zu Druid 6
My essential point is that I am listening to circuits now, not brands; deciding on final implementations as a result. It just happens that I found (stumbled upon) an amp builder who can build inexpensively at quality execution to let me try many c... 
Zu Druid 6
Parsons,My amp observations weren't limited to less expensive push-pull examples. I started with Audion Golden Dreams and Audion Black Shadows, a Luxman Anniversary 300B SET and a host of others. What led to the amp circuits exploration was that I... 
Zu Druid 6
The V69 clones are rumored to have made it out of Hong Kong yesterday but I haven't yet gotten DHL notice or tracking. Xiao Nan took my batch of amps to Hong Kong to ship just as the protests were getting started back in late April and they've bee...