celander

Responses from celander

Why aren't new vacuum tubes as good as old ones?
BTW, RCH Labs out of Carson City, NV appears no longer in business.  
DAC-Preamp having these specifications?
@shadorne yes, I see that. Rory of Benchmark sent a bunch of links of application notes to me. Looks like they’ve also improved the master clock and how jitter is controlled in the DAC of the DAC3 unit. 
Turntable setup in Chicagoland area
Chris Barry is the go-to Linn setup guy. He was at Music Direct, too. No longer there.  
DAC-Preamp having these specifications?
@shadorne thanks for the links. Looks like the DAC3 HDR-VC™ system combines an active gain circuit with a low-impedance passive attenuator, where the motorized volume pot controls the active gain circuit and the passive attenuator is located after... 
DAC-Preamp having these specifications?
I have sent a request to benchmark about this topic.  
DAC-Preamp having these specifications?
@audioengr So the DAC3 uses method 2, with the attenuation arising after the last active stage? I’m unclear about this.  
Foil damping tape as a tonearm tube wrap?
@geoffkait +1, for clarity.  
DAC-Preamp having these specifications?
The owners manual of the all digital input version, DAC3 DX, makes even more clear the digital volume control of the outputs:”The MAIN bus drives the XLR outputs and one pair of RCA outputs. The MAIN bus delivers the highest performance because it... 
Which Nakamichi to choose?
The high cost of high quality tapes is sufficient reason to abandon this technology. Chalk it up to economics.  
DAC-Preamp having these specifications?
@georgehifi I looked at the owners manual after posting. I think you are correct about the digital domain volume control. Here is what their manual says:“HGC is Benchmark's unique Hybrid Gain Control system. The DAC3 combines active analog gain co... 
DAC-Preamp having these specifications?
@georgehifi If a DAC-preamp manufacturer uses only an analog volume pot, then can one assume the digital domain is set for 100% output, thereby ensuring no bit-stripping arises? I’m thinking here of the Benchmark DAC3.  
DAC-Preamp having these specifications?
@georgehifi I thought I deleted my errant post regarding my misread of your suggested “1000-Ohms”. I read your post again and realized you wrote “100Ohms” rather than “1000Ohms”. My bad. The ATC (analog) preamps have a rated output impedance of 10... 
Oppo 205 modification
@tuffy72561, nice summary, including your install of your parallel run of Teo Audio Ultras in your system.  
DAC-Preamp having these specifications?
Just for grins, I pulled out of storage my CAL Delta transport, Sonic Frontiers Ultra Jitterbug (reclocks transport signal to <40ps jitter) and Theta DS Pro Basic IIIA (interlinked via Canare AES/EBU 110-Ohm digital IC’s) and ran it head to hea... 
DAC-Preamp having these specifications?
@1graber2 the BC 3.7 checks all the boxes except price. It seems $2k higher than what I’m interested in spending.