Announcement

Collapse
No announcement yet.

Class D (Switching) Amps

Collapse
X
 
  • Filter
  • Time
  • Show
Clear All
new posts

  • #16
    I've long been a fan of Blue Circle amps which I've had four of over the years (all class AB). After years of work they just released a series of class D amps which are supposedly excellent. I'll be receiving one this month to demo, so I'll see what I think, it will be my first experience with one. Nice review here:

    http://www.stereotimes.com/post/blue...s-d-amplifier/

    Comment


    • Rob
      Rob commented
      Editing a comment
      what ever happened to Blue Circle, kaput?

    • Jtycho
      Jtycho commented
      Editing a comment
      Sort of. Owner Gilbert Yeung was tired of the business but not designing and building amps. He’s making amps for select dealers, including Amherst Audio. They’re dealing with the business side and he gets to still have fun.

  • #17
    Originally posted by Jtycho View Post
    I've long been a fan of Blue Circle amps which I've had four of over the years (all class AB). After years of work they just released a series of class D amps which are supposedly excellent. I'll be receiving one this month to demo, so I'll see what I think, it will be my first experience with one. Nice review here:

    http://www.stereotimes.com/post/blue...s-d-amplifier/

    Very cool! Nice that you also get to audition in your system too!
    Myles B. Astor, PhD, Administrator
    Senior Editor, Positive-Feedback.com
    ________________________________________

    -Magico S5 Mk.2 speakers with SPod feet
    -cj 40th Anniversary ART300 monoblock amplifiers
    -Merrill Audio Elemente 116 monoblock amplifiers
    -cj GAT preamplifier Series 2 preamplifier
    -Doshi V3.0 phonostage
    -VPI Vanquish direct-drive turntable
    -VPI 12-inch 3D Fat Boy dual pivot tonearm, VPI 12-inch 3D Fat Boy gimballed and SAT LM-12 arm
    -Lyra Atlas SL, Fuuga, vdh Colibri Master Signature, MOFI Master Tracker, Sumiko Songbird cartridges
    -Technics RS1506 with Flux Magnetic heads, Doshi V3.0 tape stage (balanced)
    -Assorted cables including Transparent XL Gen. 5, Allnic cables, Skogrand, Viero, Kubala-Sosna, MG Audio, Audience Au24SX, Genesis Advanced Technologies Power Cords
    -Accessories including Stillpoint Aperture panels, Cathedral Sound panels, Furutech NCF Nano AC receptacles; Silver Circle Tchaik 6 PLC, Symposium ISIS and SRA Craz racks, Audiodharma Cable Cooker, Symposium Ultra and assorted SRA platforms.

    Comment


    • Jtycho
      Jtycho commented
      Editing a comment
      Well that's one of the benefits of wasting (oops I mean 'investing')so much money on audio over the years!

  • #18
    Originally posted by MylesBAstor View Post
    Has anyone had a chance to hear the Mola Mola?
    I'm listening to a pair right now! I've had them since fall of 2014 and been pretty pleased. It takes a bit of composure to drive the Q5.

    Comment


    • #19
      Like tubes and vinyl, I have a feeling I'm gonna want to keep my amps analog for life.
      Magnepan 1.6 QR Loudspeakers, Amherst A-2000 MOSFET 150 WPC Amp, Conrad Johnson PV-10A Modded Tube Line & Phono Stage, Electrocompaniet MC II Class A Head Amp, Shelter 501 Mark II Cart (St) , Graham Engineering 2.2 Tonearm (St) , VPI Aries-1 Turntable (St) , VPI Clamp, Denon DL-102 Cart, (M) , Luxman Tonearm (M) , Kenwood KD-500 Turntable (M) , Michell Clamp, Marantz 20B Analog FM Tuner, Pioneer SACD, Onkyo DX-6800 CD Transport, DIY 24B/192K DAC, Sennheiser HD-300 Headphones, Headroom Max Balanced Headphone Amp, DIY Silver Interconnects

      Comment


      • #20
        Originally posted by sauerball View Post

        I'm listening to a pair right now! I've had them since fall of 2014 and been pretty pleased. It takes a bit of composure to drive the Q5.
        Could you tell us more about the combo?
        Myles B. Astor, PhD, Administrator
        Senior Editor, Positive-Feedback.com
        ________________________________________

        -Magico S5 Mk.2 speakers with SPod feet
        -cj 40th Anniversary ART300 monoblock amplifiers
        -Merrill Audio Elemente 116 monoblock amplifiers
        -cj GAT preamplifier Series 2 preamplifier
        -Doshi V3.0 phonostage
        -VPI Vanquish direct-drive turntable
        -VPI 12-inch 3D Fat Boy dual pivot tonearm, VPI 12-inch 3D Fat Boy gimballed and SAT LM-12 arm
        -Lyra Atlas SL, Fuuga, vdh Colibri Master Signature, MOFI Master Tracker, Sumiko Songbird cartridges
        -Technics RS1506 with Flux Magnetic heads, Doshi V3.0 tape stage (balanced)
        -Assorted cables including Transparent XL Gen. 5, Allnic cables, Skogrand, Viero, Kubala-Sosna, MG Audio, Audience Au24SX, Genesis Advanced Technologies Power Cords
        -Accessories including Stillpoint Aperture panels, Cathedral Sound panels, Furutech NCF Nano AC receptacles; Silver Circle Tchaik 6 PLC, Symposium ISIS and SRA Craz racks, Audiodharma Cable Cooker, Symposium Ultra and assorted SRA platforms.

        Comment


        • #21
          There she is peeking out from behind the Q5. Sharing a Manhattan living room with my family, needed something compact yet up to the task. I auditioned the Q5 with a Constellation Centaur stereo, which I thought worked well but wasn't quite as dynamic or resolved. The Kaluga, much like the Q5, is resolved and uncolored - you hear what's in the recording. Not for everyone's taste, to be sure, but works very well for me.

          I really don't want to get on an amplifier merry-go-round. Perhaps there's something better, but I'm trying, for once, to be content with something that works quite well.

          Come listen if you'd like!

          Comment


          • #22
            Originally posted by sauerball View Post
            There she is peeking out from behind the Q5. Sharing a Manhattan living room with my family, needed something compact yet up to the task. I auditioned the Q5 with a Constellation Centaur stereo, which I thought worked well but wasn't quite as dynamic or resolved. The Kaluga, much like the Q5, is resolved and uncolored - you hear what's in the recording. Not for everyone's taste, to be sure, but works very well for me.

            I really don't want to get on an amplifier merry-go-round. Perhaps there's something better, but I'm trying, for once, to be content with something that works quite well.

            Come listen if you'd like!

            Thank for the invite and would love to hear the combo! Let me see how my schedule shakes out after Axpona!
            Myles B. Astor, PhD, Administrator
            Senior Editor, Positive-Feedback.com
            ________________________________________

            -Magico S5 Mk.2 speakers with SPod feet
            -cj 40th Anniversary ART300 monoblock amplifiers
            -Merrill Audio Elemente 116 monoblock amplifiers
            -cj GAT preamplifier Series 2 preamplifier
            -Doshi V3.0 phonostage
            -VPI Vanquish direct-drive turntable
            -VPI 12-inch 3D Fat Boy dual pivot tonearm, VPI 12-inch 3D Fat Boy gimballed and SAT LM-12 arm
            -Lyra Atlas SL, Fuuga, vdh Colibri Master Signature, MOFI Master Tracker, Sumiko Songbird cartridges
            -Technics RS1506 with Flux Magnetic heads, Doshi V3.0 tape stage (balanced)
            -Assorted cables including Transparent XL Gen. 5, Allnic cables, Skogrand, Viero, Kubala-Sosna, MG Audio, Audience Au24SX, Genesis Advanced Technologies Power Cords
            -Accessories including Stillpoint Aperture panels, Cathedral Sound panels, Furutech NCF Nano AC receptacles; Silver Circle Tchaik 6 PLC, Symposium ISIS and SRA Craz racks, Audiodharma Cable Cooker, Symposium Ultra and assorted SRA platforms.

            Comment


            • #23
              Originally posted by MylesBAstor View Post


              Only at shows and my reaction has run from awful to lukewarm to interesting. But the Class D amps all seem to have the same characteristics. Flat, kind of unfocussed and loss of information.
              I and many others would beg to differ. Many describe the VERITAS Monoblocks as Emotional, Musical, Detailed, Precise, Wide and Deep soundstage.


              VERITAS MONOBLOCKS Reviews.

              http://www.avshowrooms.com/Axpona_2014.html - GOLD SHOW AWARD, BEST SOUND 2014

              http://www.positive-feedback.com/Iss...rill_audio.htm

              http://www.enjoythemusic.com/superio..._monoblock.htm - BEST EQUIPMENT of 2014.

              http://www.dagogo.com/merrill-audio-...plifier-review

              http://www.stereomojo.com/Merrill%20...fierReview.htm - MAX MOJO AWARD

              https://parttimeaudiophile.com/2014/...ck-amplifiers/

              http://hifipig.com/merrill-audio-ver...er-amplifiers/

              http://www.audiophilia.com.vs5.korax.net/wp/?p=15543


              THOR MONOBLOCKS reviews. Also musical, detailed, excellent soundstage, emotional.

              https://parttimeaudiophile.com/2015/...ck-amplifiers/

              AND AGAINST THE COMPETITION - https://parttimeaudiophile.com/2015/...reo-amplifier/

              http://www.enjoythemusic.com/magazin...ier_Review.htm

              http://hifipig.com/merrill-audio-tho...oc-amplifiers/

              http://www.stereomojo.com/MerrillAud...Monoblocks.htm - MAX MOJO AWARD


              http://www.tnt-audio.com/ampli/merrill_thor_e.html

              http://www.avrev.com/home-theater-po...rs-review.html

              TARANIS STEREO AMP - THE BABY OF THE PACK

              http://positive-feedback.com/audio-d...reo-amplifier/

              http://www.enjoythemusic.com/magazin...ier_Review.htm

              More reviews to come.


              Listen with an open mind and perhaps double blind test. The VERITAS Monoblocks will easily take on the competition in the double blind test for sound. Sorry the VERITAS and its family does not compete on discounting, only on sound.


              We continue to build the best in audio

              Jens Phono Stage - "The Best Phono stage I have ever heard", Harry Weisfeld, VPI Turntable Owner/founder.

              BEST EQUIPMENT 2015, SPECIAL 20/20 AWARD
              http://www.enjoythemusic.com/superio...ier_Review.htm


              So when we built the Class D amplifiers, it was only because it sounded the best, much like our other components. AUDIO PURITY.

              Thank you for reading,
              and listening with your ears.

              Feel free to come listen

              Axpona 2016 - Room 520. With Referene3A Speakers Introducing the Superb Cara Pre-amplifier. Reviews on the way.
              Newport 2016 - Room 1417 With German Physiks speakers Introducing the Reference Christine Pre-amplifier. No reviews scheduled yet.
              Munich High End Show 2016. EU Distributor www.HearEverything.nl

              For Asia - http://www.horizonacoustics.com/prod...oduct-listing/




              Merrill Audio.

              Comment


              • #24
                Originally posted by MylesBAstor View Post


                Thank for the invite and would love to hear the combo! Let me see how my schedule shakes out after Axpona!
                Also welcome to try them out with your system. Easy, they fit in a small carry case.

                Comment


                • #25
                  Originally posted by sauerball View Post

                  Also welcome to try them out with your system. Easy, they fit in a small carry case.
                  Myles B. Astor, PhD, Administrator
                  Senior Editor, Positive-Feedback.com
                  ________________________________________

                  -Magico S5 Mk.2 speakers with SPod feet
                  -cj 40th Anniversary ART300 monoblock amplifiers
                  -Merrill Audio Elemente 116 monoblock amplifiers
                  -cj GAT preamplifier Series 2 preamplifier
                  -Doshi V3.0 phonostage
                  -VPI Vanquish direct-drive turntable
                  -VPI 12-inch 3D Fat Boy dual pivot tonearm, VPI 12-inch 3D Fat Boy gimballed and SAT LM-12 arm
                  -Lyra Atlas SL, Fuuga, vdh Colibri Master Signature, MOFI Master Tracker, Sumiko Songbird cartridges
                  -Technics RS1506 with Flux Magnetic heads, Doshi V3.0 tape stage (balanced)
                  -Assorted cables including Transparent XL Gen. 5, Allnic cables, Skogrand, Viero, Kubala-Sosna, MG Audio, Audience Au24SX, Genesis Advanced Technologies Power Cords
                  -Accessories including Stillpoint Aperture panels, Cathedral Sound panels, Furutech NCF Nano AC receptacles; Silver Circle Tchaik 6 PLC, Symposium ISIS and SRA Craz racks, Audiodharma Cable Cooker, Symposium Ultra and assorted SRA platforms.

                  Comment


                  • #26
                    I recently spent a good bit of time with Atash NC500 monos based on the new ncore n500 modules and they were honestly pretty good. They lacked the impact and dimensionality of my Lamm monos and were comparably a bit drier, but they were clean and honest with pretty good drive. Very transparent pieces as well... Of you were looking for magic/sugar coating you won't find it with these, it must intrinsic to your system before them.

                    I sold them as I ended up preferring my Lamms, but I may pick up a pair of the nords this summer for a more versatile, cool running amplifier.

                    Comment


                    • #27
                      I was fortunate to have these two amplifiers on loan for a number of weeks last fall but I only listened to them on my Thiel 7.2s (with balanced connections directly from my Wadia 850 CD player), so I'm sure they will give different results with different speakers.

                      Gilmore Raptors - $2500/pair - 500w into 4ohms

                      The good - About 10 years ago I heard the Raptors driving a pair of Maggies and they really sounded terrific - others have reported similar results with these speakers. These amps (based on the B&O Ice module) provided the best bass I have heard on the Thiels - floor-shakingly low, well defined and punchy. The amps also excel at rythymic drive and dynamic contrasts. They are fairly transparent with decent depth.

                      The not-so-good - they sound bright on the Thiels and get hard and "splashy" when turned up even a little. The high frequencies seem cut-off and lacking in air. I had the feeling the music was being pushed out at me and at their best I would describe the sound "as a good recording", never getting close enough to live for me. I had hoped these could serve as summer replacement amps for my tubed Manleys during the hot weather.

                      Merrill Veritas Monos - $12,000/pair - 700w into 4ohms

                      The good - these amps (based on the Hypex N-core NC1200 module) may be what Apple would design if they were to get into audio. They are made from a solid 66lb aluminum block, which has smooth, rounded corners and one-inch thick internal walls. Sonically there is a tonal purity and clarity to the sound with a lack of background noise which provides terrific transparency, individuality to instruments and voices with more layered depth.

                      The not so good - they also sounded bright on the Thiels but could be turned up a little more before the sound got hard and too bright. The midrange can sound a little thinner than the Raptors because without that strong bottom end, you focus more on the upper midrange (kind of like the ARC house sound I recall from 20 years ago). High frequencies are extended and open. But I never forgot I was listening to a solid state amp. The amps provide all the music and a lot of detail but sound kind of sterile, lacking any sense of real space or air.

                      Back to my Manley NeoClassic 250s - ahhhh, a relief. There is a synergy between these amps and the big Thiels that never fails to draw me into the music. On good recordings I can almost forget I'm listening to a CD and imagine the musicians in the room. The instruments and vocals have body, dimensionality and harmonic bloom the other two amps could only hint at.

                      But with different speakers, who knows?

                      Thiel 7.2s, Manley NeoClassic 250s, Wadia 850, MIT Oracle V3 speaker cables, MIT MI-350 Oracle interconnects, Black Diamond Racing Shelves and Cones in a dedicated room with ASC Tube Traps, Room Tunes and 3 X 20 amp dedicated circuits.

                      Comment


                      • #28
                        I have a pair of the NC500 Nords with the Sonic Imagery 994 op amp buffers. I also have a pair of the Hypex NC400. The Nords are very very good, compared to my REF75 they are more revealing and detailed with excellent image depth. The REF75 has a warmer balance with more body in the lower midrange. I can easily live with either in my system.
                        Marty

                        Comment


                        • #29
                          For those looking for a softer sound, the Merrill Audio Thor Monoblocks are an excellent match.

                          Here is an excellent review and comparison of both.

                          http://www.monoandstereo.com/2016/04...-and-thor.html

                          Merrill Audio.

                          Comment


                          • #30
                            I heard the Mola Mola amps and pre at Newport this weekend coupled with YG Carmel 2s. I have heard the Carmel ones many times at shows in many combinations. I thought the combo this year was fabulous.
                            TW Acustic TT with Ref motor & controller; Tri-Planar Arm; Transfiguration Proteus Cart; Arcam R Phono Preamp; Bluesound Vault-2 Music Server & Streamer; VTL 6.5 preamp, Pass Labs 150.8 Amp; Piega C711 Loudspeakers; Symposium Osiris Rack; Symposium Platforms and Roller Blocks plus grade 2.5 Balls; Shunyata Hydra 8; Shunyata AC Cords; Synergistic Research Atmosphere Excite Level 2X AC Cord & Level 3 HC AC Cord , Audio Art Ref balanced ICs, MIT Oracle IC and Magnum Speaker Cables; Schiitt Headphone Amp; Sennheiser HD700 Headphones; KLAudio Ultrasonic Record Cleaner

                            Comment

                            Working...
                            X