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  • Gizmo desktop amp alternatives

    The Gizmo desktop amplifier (old thread - X-19) has been discontinued and sold out (12/15/10 link).
    Recently people have expressed interest in that type of mini-desktop integrated amp and other electronics (link1, 12/15/10 link)"]link2[/URL]).

    I bought a few of the Gizmos and found them highly useful for setting up work audio systems.

    I thought I'd explore and post some alternatives.

    Features:
    - small
    - "inexpensive" -- although that may vary
    - +/- subwoofer output (may use full range speaker outputs and then "sat" output from subwoofer -- if available)
    - ...

    Please post if you have any experience with these, note other important features, etc.

    Mike
    HT Gear (AVS Link)
    Rk: MA WR-37-32
    Pwr: 20A, Surge-X SEQ, M1500-UPS
    Proj: JVC RS20, 128" 2.4:1 CaradaBW, ISCOIIIL, CineSlide, RadianceXE
    Cbl: DirectTV C31/700 Genie receiver
    Rec: 5308CI + XPA-3
    BR: Oppo BDP-103
    Gm: 360 Pro
    LR/C: RS1KSig/RSC200Sig
    S/R: RSS300/RS250MkII
    Sub: SVS PB12-Ultra/2
    Off: HRT MS DAC, USP-1, UPA-2, ERC-1, Ultra10, WAF-1 Ninja+No-Rez
    Off2: Gizmo, WAF-1
    TCA: 3x Gizmo 1.0or,5x v1.0M; 5xWAF-1

  • #2
    Gizmo desktop amp alternatives

    Updated: 1-4-2011

    Purple = DIY kit
    Red = explicit subwoofer output (not just full range to sub then crossover in subwoofer)


    Gizmo desktop amp alternatives

    Audioengine
    - Audioengine N22 - $199 - 22W/ch, 2 inputs, headphone out

    Class D Audio (DIY)
    - SDS-224 DIY Kit - $275 - 120w @ 4ohm, 60w @ 8ohm
    - SDS-254 DIY Kit - $310 - 250w @ 4ohm, 125w @ 8ohm
    - SDS-258 DIY Kit - $360 - 250w @ 8ohms (please check with class D for 4ohm)

    Dayton
    - DTA-100a - $99 - Class-T Digital Amplifier 50W/ch (into 8 ohms @ 3% THD), 2 x 30 watts RMS (into 8 ohms @ 0.01% THD)
    - DTA-1 - $34 - Class T Digital AC/DC Amp - 15W/ch RMS (into 4 ohms @ 10% THD), 10W/ch RMS (into 4 ohms @ 0.1% THD)
    - Dayton APA150 - $159 - 75W/ch RMS (into 4 ohms @ less than 0.01% THD), low pass filter


    HifimeDiy (DIY)
    Link

    Lepai
    - Tripath TA2020 - $20 - Class-T - 2 x 20 watts RMS * Minimum THD : <0.05%


    Maverick Audio
    - TubeMagic A1 - $199 - "power amplifier, a tube headphone amplifier and a tube pre-amplifier" - 20W/ch, Class A/B
    - TubeMagic D1 DAC - $199 - DAC (not an amp) can be used with A1 amp

    NuForce
    - Icon amp - $189 - 2x24W amp
    - Icon - $249 - 2x12W amp - subwoofer line out
    - Icon2 - $349 - 2x24W amp
    - NuForce Icon HDP - $449 - Headphone Amp, DAC and Preamp

    Pyle-Pro
    - PCAU22 - $47 - 40W/ch (4ohm, unspecified distortion) Amp w/ USB Input
    - PTA2 Mini - $60 - 8Wch (1 kHz @4ohms, 1% THD) Stereo Mixer/Power Amplifier
    - PCA3 - $69 - 15W/ch @ 1%THD, bass/treble controls
    - PTA3 - $67 - 15W/ch @ 1%THD, 3 inputs, bass/treble controls

    Trends Audio
    - Trends TA-10.1 - $179 - Mini Class-T Stereo Amplifier - 10W/ch (8ohm)


    Virtue Audio
    - One.2 "Classic" - $299 - 87 wpc @ 4 ohms - subwoofer pre-out - "...same amplifier as the ONE.2 without the extra set of input caps for bass management and stepped attenuator."
    - One.2 - $349 -
    - Two.2 - $449 -

    ...
    HT Gear (AVS Link)
    Rk: MA WR-37-32
    Pwr: 20A, Surge-X SEQ, M1500-UPS
    Proj: JVC RS20, 128" 2.4:1 CaradaBW, ISCOIIIL, CineSlide, RadianceXE
    Cbl: DirectTV C31/700 Genie receiver
    Rec: 5308CI + XPA-3
    BR: Oppo BDP-103
    Gm: 360 Pro
    LR/C: RS1KSig/RSC200Sig
    S/R: RSS300/RS250MkII
    Sub: SVS PB12-Ultra/2
    Off: HRT MS DAC, USP-1, UPA-2, ERC-1, Ultra10, WAF-1 Ninja+No-Rez
    Off2: Gizmo, WAF-1
    TCA: 3x Gizmo 1.0or,5x v1.0M; 5xWAF-1

    Comment


    • #3
      If you do not mind going the DIY route consider the ClassD amps:

      http://classdaudio.com/index.php/pro...s-224-kit.html (120w @ 4ohm, 60w @ 8ohm) - $275

      http://classdaudio.com/index.php/pro...s-254-kit.html (250w @ 4ohm, 125w @ 8ohm) - $310

      http://classdaudio.com/index.php/pro...s-258-kit.html (250w @ 8ohms, please check with classd for 4ohm) - $360

      Maverick Audio TubeMagic A1 - http://www.mav-audio.com/base/product/tube_magic_a1 - $199

      Comment


      • #4
        Class D Audio kits

        Originally posted by shadowlight
        If you do not mind going the DIY route consider the ClassD amps:

        http://classdaudio.com/index.php/pro...s-224-kit.html (120w @ 4ohm, 60w @ 8ohm) - $275

        http://classdaudio.com/index.php/pro...s-254-kit.html (250w @ 4ohm, 125w @ 8ohm) - $310

        http://classdaudio.com/index.php/pro...s-258-kit.html (250w @ 8ohms, please check with classd for 4ohm) - $360

        Maverick Audio TubeMagic A1 - http://www.mav-audio.com/base/product/tube_magic_a1 - $199
        Cool.
        Do the Class D Audio kits have "shells"?

        Mike
        HT Gear (AVS Link)
        Rk: MA WR-37-32
        Pwr: 20A, Surge-X SEQ, M1500-UPS
        Proj: JVC RS20, 128" 2.4:1 CaradaBW, ISCOIIIL, CineSlide, RadianceXE
        Cbl: DirectTV C31/700 Genie receiver
        Rec: 5308CI + XPA-3
        BR: Oppo BDP-103
        Gm: 360 Pro
        LR/C: RS1KSig/RSC200Sig
        S/R: RSS300/RS250MkII
        Sub: SVS PB12-Ultra/2
        Off: HRT MS DAC, USP-1, UPA-2, ERC-1, Ultra10, WAF-1 Ninja+No-Rez
        Off2: Gizmo, WAF-1
        TCA: 3x Gizmo 1.0or,5x v1.0M; 5xWAF-1

        Comment


        • #5
          Gizmo specs

          Gizmo specs (for reference)

          $139 (including shipping) - originally

          Specifications
          Output Connections: L/R channel speakers ; Subwoofer out (RCA connection)
          Power Rating: 25WPC x 2 @ 4 ohms (or 8 ohms ???)
          Voltage: 110V/220V
          Shipping weight: 7 lbs (approx)
          Dimensions: 8"D x 2.5"H x 4.5"W
          Additional Features:
          • Digital Display
          • Separate Bass and Treble Controls
          • Subwoofer out
          • Rosewood cap
          • True 100 Hz crossover built-in
          • Volume +/-, Mute, Standby and Bass/Treble controls


          ...
          HT Gear (AVS Link)
          Rk: MA WR-37-32
          Pwr: 20A, Surge-X SEQ, M1500-UPS
          Proj: JVC RS20, 128" 2.4:1 CaradaBW, ISCOIIIL, CineSlide, RadianceXE
          Cbl: DirectTV C31/700 Genie receiver
          Rec: 5308CI + XPA-3
          BR: Oppo BDP-103
          Gm: 360 Pro
          LR/C: RS1KSig/RSC200Sig
          S/R: RSS300/RS250MkII
          Sub: SVS PB12-Ultra/2
          Off: HRT MS DAC, USP-1, UPA-2, ERC-1, Ultra10, WAF-1 Ninja+No-Rez
          Off2: Gizmo, WAF-1
          TCA: 3x Gizmo 1.0or,5x v1.0M; 5xWAF-1

          Comment


          • #6
            Originally posted by Mike_TX
            Cool.
            Do the Class D Audio kits have "shells"?

            Mike
            Sorry, can you clarify what you mean by shells? Do you mean a case. If yes, than the answer is no you have to provide rca jacks, case, speaker connectors and IEC power adapter.

            Comment


            • #7
              Originally posted by shadowlight
              Sorry, can you clarify what you mean by shells? Do you mean a case. If yes, than the answer is no you have to provide rca jacks, case, speaker connectors and IEC power adapter.
              Yes, case.
              Thanks

              Mike
              HT Gear (AVS Link)
              Rk: MA WR-37-32
              Pwr: 20A, Surge-X SEQ, M1500-UPS
              Proj: JVC RS20, 128" 2.4:1 CaradaBW, ISCOIIIL, CineSlide, RadianceXE
              Cbl: DirectTV C31/700 Genie receiver
              Rec: 5308CI + XPA-3
              BR: Oppo BDP-103
              Gm: 360 Pro
              LR/C: RS1KSig/RSC200Sig
              S/R: RSS300/RS250MkII
              Sub: SVS PB12-Ultra/2
              Off: HRT MS DAC, USP-1, UPA-2, ERC-1, Ultra10, WAF-1 Ninja+No-Rez
              Off2: Gizmo, WAF-1
              TCA: 3x Gizmo 1.0or,5x v1.0M; 5xWAF-1

              Comment


              • #8
                Originally posted by Mike_TX
                Yes, case.
                Thanks

                Mike
                My total build cost for the cda254L amp kit/case/rca/iec/speaker was around 330 or so. Thinking about building 500w mono amps.

                Comment


                • #9
                  500 W mono amps!

                  Originally posted by shadowlight
                  My total build cost for the cda254L amp kit/case/rca/iec/speaker was around 330 or so. Thinking about building 500w mono amps.
                  Cool.
                  Start a build thread if you do.
                  I'm sure people will be interested.

                  BTW - you might consider posting your gear in your signature, so people can see what you are combining.

                  Cheers,

                  Mike
                  HT Gear (AVS Link)
                  Rk: MA WR-37-32
                  Pwr: 20A, Surge-X SEQ, M1500-UPS
                  Proj: JVC RS20, 128" 2.4:1 CaradaBW, ISCOIIIL, CineSlide, RadianceXE
                  Cbl: DirectTV C31/700 Genie receiver
                  Rec: 5308CI + XPA-3
                  BR: Oppo BDP-103
                  Gm: 360 Pro
                  LR/C: RS1KSig/RSC200Sig
                  S/R: RSS300/RS250MkII
                  Sub: SVS PB12-Ultra/2
                  Off: HRT MS DAC, USP-1, UPA-2, ERC-1, Ultra10, WAF-1 Ninja+No-Rez
                  Off2: Gizmo, WAF-1
                  TCA: 3x Gizmo 1.0or,5x v1.0M; 5xWAF-1

                  Comment


                  • #10
                    http://tinyurl.com/28w9l9u

                    OR

                    http://tinyurl.com/2admdkv

                    OR

                    a little ugly, but: http://tinyurl.com/27b4uvq
                    With that wattage, the voice coil is now a Rail Gun. You get 1 note, but it will be memorable! :salute:
                    Stolen from JEFFakaMAX at AVSforum.

                    Comment


                    • #11
                      Originally posted by frijoli
                      Thanks.
                      N22 was mentioned above.
                      I added the others to the list.

                      Mike
                      HT Gear (AVS Link)
                      Rk: MA WR-37-32
                      Pwr: 20A, Surge-X SEQ, M1500-UPS
                      Proj: JVC RS20, 128" 2.4:1 CaradaBW, ISCOIIIL, CineSlide, RadianceXE
                      Cbl: DirectTV C31/700 Genie receiver
                      Rec: 5308CI + XPA-3
                      BR: Oppo BDP-103
                      Gm: 360 Pro
                      LR/C: RS1KSig/RSC200Sig
                      S/R: RSS300/RS250MkII
                      Sub: SVS PB12-Ultra/2
                      Off: HRT MS DAC, USP-1, UPA-2, ERC-1, Ultra10, WAF-1 Ninja+No-Rez
                      Off2: Gizmo, WAF-1
                      TCA: 3x Gizmo 1.0or,5x v1.0M; 5xWAF-1

                      Comment


                      • #12
                        Some more:

                        Dayton DTA-100a based around Tripath Chipset 50w @ 8ohms
                        Dayton DTA-1

                        Comment


                        • #13
                          Don't forget the virtue One.2 and Two.2.
                          http://store.virtueaudio.com/category-s/90.htm

                          For DIY another tripath option is hifimediy.
                          http://hifimediy.com/?page_id=18&category=1

                          Comment


                          • #14
                            The Dayton DTA-100a also functions as a headphone amp

                            "The DTA-100a also doubles as a high fidelity headphone amplifier that will drive any headphone easily, and delivers colossal sound stage and effortless dynamic range."

                            Here's a few others


                            Lepai Tripath TA2020 Class-T Hi-Fi Audio Amplifier

                            http://www.parts-express.com/pe/show...number=310-300

                            Pyle Pro PCA2 Mini Stereo Power Amplifier

                            http://www.parts-express.com/pe/show...umber=310-2000

                            Pyle Pro PCA3 Mini Stereo Power Amplifier

                            http://www.parts-express.com/pe/show...umber=310-2002


                            This ones a little larger

                            Dayton APA150 150W Power Amplifier

                            http://www.parts-express.com/pe/show...number=300-812

                            Comment


                            • #15
                              I've been doing a little digging on my own, and came across the Pyle Pro PTA2 Mini 2x40W Stereo Mixer/Power Amplifier.

                              http://www.parts-express.com/pe/show...Show=1#reviews

                              It's at a pretty decent price point between the DTA-100a and DTA-1, plus it has input switching which is also nice. I'm a little worried about complaints of hissing from the reviews, as I'd be listening via WAF-1s or Audio Technica ATH-ES7s from onboard PC output, an iPod Classic, or a Playstation 3.

                              Comment

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