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  1. atomicbob

    Official Seattle meet 01/25/20 Impressions

    I should note the Stellia headphones I brought were acquired from Andrew at Bloom Audio.
  2. atomicbob

    Official Seattle meet 01/25/20 Impressions

    thank-you for once again organizing this quarterly meet @BIG POPPA highlights for me included: @johnjen purple amp which had the midrange magic nailed along with a good representation of the entire auditory spectrum. Much more bass impact than I would have expected. @gefski asgard 3 which...
  3. atomicbob

    Monoprice Monolith Liquid Platinum - By Alex Cavalli

    Liquid Platinum is a very transparent hybrid amp. Please see the measurements here: https://www.head-fi.org/threads/monoprice-cavalli-liquid-platinum-technical-measurements.894843/ The current supplied SMPS, which is exceptionally low noise, works bests with the LP. The supplied tubes are also...
  4. atomicbob

    Official Seattle meet 01/25/20 IN West Seattle

    I hope to make it Sat. If I can, will have Bifrost-2 with a small production run Russian amplifier and either HD800-Jmod or Focal Stellia. AB
  5. atomicbob

    Seattle Meet Off the Chain 9/7

    First, many thanks to @BIG POPPA for organizing yet another successful meet. One of the changes that has occurred over time is the rather large increase in synergistic systems appearing at the meet. I could easily sit at a system and settle in (wishing micro-brew or glass of red in hand) and...
  6. atomicbob

    Monoprice Monolith Liquid Platinum - By Alex Cavalli

    Alex is correct in pointing out how people not skilled in the measurement arts will latch on to data which may be selectively presented, misleading, misrepresenting or deficient, and develop incorrect conclusions because a high profile audio tester was employed for the measurements. Then this...
  7. atomicbob

    Monoprice Monolith Liquid Platinum - By Alex Cavalli

    You may find a comprehensive set of measurements for the Liquid Platinum right here on head-fi: https://www.head-fi.org/threads/monoprice-cavalli-liquid-platinum-technical-measurements.894843/
  8. atomicbob

    Monoprice Monolith Liquid Platinum - By Alex Cavalli

    Please look at the blue line in the 12 dB attenuation graph in this post: https://www.head-fi.org/threads/goldpoint-sa2x-nobsound-ns-05p-passive-attenuator-comparison-technical-measurements.899382/#post-14761029 With 2 feet of a low capacitance cable, Belden 1800F, high frequency roll-off was...
  9. atomicbob

    Monoprice Monolith Liquid Platinum - By Alex Cavalli

    Harrison Labs 12 dB attenuator comprises the following based on data available from the internet: That is as simple as it gets. Attenuation is actually 12.24 dB. If Nobsound would actually change the NS-05P from a 50K Alps to a 10K Alps pot, that would be the better solution. I had seen the...
  10. atomicbob

    Monoprice Monolith Liquid Platinum - By Alex Cavalli

    As @Mr Trev states, this is an issue with ALL potentiometers, all amps, more or less at the counterclockwise extreme. Alps too. Solutions are costly, from sorting pots, exceptionally tight mfg specs, or stepped attenuators with precision film resistors. I use a GoldPoint SA2X and set the LP pot...
  11. atomicbob

    Monoprice Monolith Liquid Platinum - By Alex Cavalli

    This is the point to which I have arrived. Add to the mix ECP Audio DSHA-3F and I have my Tres Amigos. Three complimentary amps each offering auditory delights with three distinct presentations. Balanced I use Belden 1800F digital audio cable with Neutrik connectors as found at Markertek. Bell...
  12. atomicbob

    03/03/19 Seattle Meet, Lake City

    4 pin balanced cable? then yes for me. Amp I might bring will only handle true 4 wire balanced connections. No 3-wire headphones - 3-wire will damage the amp.
  13. atomicbob

    03/03/19 Seattle Meet, Lake City

    May have yet another surprise for this meet.
  14. atomicbob

    Monoprice Monolith Liquid Spark - By Alex Cavalli

    A reminder that for those of you enjoying the Liquid Spark, an amazing amp with bandwidth from DC to > 1.5 MHz, technical measurements may be found here: https://www.head-fi.org/threads/monoprice-cavalli-liquid-spark-technical-measurements.890981
  15. atomicbob

    Monoprice Monolith Liquid Platinum - By Alex Cavalli

    Here are some links concerning SMPS vs LPS. The warning and power on / off procedure: https://www.head-fi.org/threads/monoprice-cavalli-liquid-platinum-technical-measurements.894843/page-2#post-14641335 Detailed measurement comparison of SMPS vs LPS...
  16. atomicbob

    Monoprice Monolith Liquid Platinum - By Alex Cavalli

    See picture of Liquid Platinum supplied SMPS: Everything you need to know is contained in that picture. Standard IEC 320 C8 inlet on the Fuyuang SMPS. Voltages, currents, regulatory approvals can all be seen on the label.
  17. atomicbob

    Monoprice Cavalli Liquid Platinum technical measurements

    I think the price increases are more from Trump's Tariffs on China manufactured electronics than anything else.
  18. atomicbob

    Monoprice Monolith Liquid Spark - By Alex Cavalli

    There are some lower cost options available: Quantasylum QA401 https://quantasylum.com/products/qa401-audio-analyzer While this doesn't have the noise floor or advanced level SW measurement sets, it does well enough for most standard amplifier measurements. I have one in my lab that I use from...
  19. atomicbob

    Monoprice Monolith Liquid Spark - By Alex Cavalli

    Liquid Spark residual noise measures as follows: -115 dBu A weighted (standard used by most manufacturers - attenuates 1/f noise and mains noise) -107 dBu unweighted (includes 1/f noise and mains noise) Most manufacturers prefer to report A weighting. Liquid Spark with supplied SMPS does...
  20. atomicbob

    Monoprice Monolith Liquid Platinum - By Alex Cavalli

    I guess there is an assumption that common knowledge would have all connections to an audio component be made BEFORE connecting external power supply to AC mains. The manual probably needs a note that states this explicitly and then a step between 2 and 3 under Amplifier Operation where SMPS is...
  21. atomicbob

    Monoprice Monolith Liquid Platinum - By Alex Cavalli

    The only way to have drawn a spark as described would require the Liquid Platinum power switch to have been in the On position while connecting the power cable to the LP power inlet with the SMPS AC power connected. That is exactly what should not be done, and should be in the user manual. The...
  22. atomicbob

    Monoprice Monolith Liquid Platinum - By Alex Cavalli

    I have a goldpoint SA2X as a passive preamp into my Liquid Platinum. Works fine.
  23. atomicbob

    Monoprice Monolith Liquid Platinum - By Alex Cavalli

    DC input resistance measures 97K Bal input 172K SE input on my Liquid Platinum
  24. atomicbob

    Monoprice Monolith Liquid Spark - By Alex Cavalli

    Liquid Spark Technical Measurements now up: https://www.head-fi.org/threads/monoprice-cavalli-liquid-spark-technical-measurements.890981/
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