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The Computer Audiophile

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  1. Upvote
    The Computer Audiophile got a reaction from Walcascar for a product, Allo Revolution DAC Reviews   
    The audiophile community is one big family united by the love of music.
     
    There is however, a fundamental split on how we judge audio hardware. One camp (objectivist) swears by THD+N and the opposition (subjectivists) swear by what they hear.
     
    We started Revolution as an attempt to unite both camps.
     
    Objectivist side:
    Revolution THD+N is -114.5. However, look closer. THD is the main problem since N (noise) is always around us and as such human ear/brain can tune it out. THD of Rev is at around -122 to -124 making this one of the best tested DACs (unbalanced outputs) in the world. 20Hz to 20Khz THD stays same (does not rise).
     
    Subjectivist side:
    Great THD numbers do not exclude great sound quality.
    Revolution DAC was subjectively tested for many months and delayed until we were satisfied with SQ. What we have found out is that some practice (like audiophile caps in opamp rails) indeed increased the SQ, and we were able to see small reduction on harmonics on THD.
     
    One area of concern was what it’s been referred to as “bright sounds” on Ess DACs. We believe that main reason comes from datasheet implementation and lack of filtering before second opamp (summing). Most designs we see lack this fundamental passive filtering (again they just copy of datasheet) and the HF noise (one parameter, there are others), while it should not be audible, somehow creates this fatiguing sound. We are pleased to say that Rev does not have the bright sound associated with ESS.
     
     
     
    Manufacturer's product page: https://allo.com/sparky/revolution-dac.html
  2. Upvote
    The Computer Audiophile got a reaction from audiobomber for a product, Allo Revolution DAC Reviews   
    The audiophile community is one big family united by the love of music.
     
    There is however, a fundamental split on how we judge audio hardware. One camp (objectivist) swears by THD+N and the opposition (subjectivists) swear by what they hear.
     
    We started Revolution as an attempt to unite both camps.
     
    Objectivist side:
    Revolution THD+N is -114.5. However, look closer. THD is the main problem since N (noise) is always around us and as such human ear/brain can tune it out. THD of Rev is at around -122 to -124 making this one of the best tested DACs (unbalanced outputs) in the world. 20Hz to 20Khz THD stays same (does not rise).
     
    Subjectivist side:
    Great THD numbers do not exclude great sound quality.
    Revolution DAC was subjectively tested for many months and delayed until we were satisfied with SQ. What we have found out is that some practice (like audiophile caps in opamp rails) indeed increased the SQ, and we were able to see small reduction on harmonics on THD.
     
    One area of concern was what it’s been referred to as “bright sounds” on Ess DACs. We believe that main reason comes from datasheet implementation and lack of filtering before second opamp (summing). Most designs we see lack this fundamental passive filtering (again they just copy of datasheet) and the HF noise (one parameter, there are others), while it should not be audible, somehow creates this fatiguing sound. We are pleased to say that Rev does not have the bright sound associated with ESS.
     
     
     
    Manufacturer's product page: https://allo.com/sparky/revolution-dac.html
  3. Upvote
    The Computer Audiophile got a reaction from lucretius for a product, AudioQuest DragonFly Red Reviews   
    The DragonFly Red from AudioQuest is a flash drive-sized Digital Audio Converter (DAC), preamplifier, and headphone amplifier that connects to a USB port. It features a 32-bit ESS Sabre conversion chip that bypasses the device's sound card to deliver higher quality sound from your Mac, Windows, iOS, or Android device (use with mobile device requires optional adapters). Compared to earlier models, the Red version has the most improved circuitry between the DAC chip and analog output, as well as a fortified power supply. Its 1/8" (3.5mm) stereo output can connect a set of headphones or allow patching into a larger audio system.
     
    Manufacturer's product page: https://www.audioquest.com/dacs/dragonfly/dragonfly-red
    DragonFly-Red-FlightManual-EN.pdf
  4. Upvote
    The Computer Audiophile got a reaction from lucretius for a product, Focal Clear Reviews   
    OPEN CIRCUMAURAL HIGH-FIDELITY HEADPHONES
    Clear are our brand new open-back high-fidelity headphones made in France by Focal. Continuing in the spirit of Utopia and Elear and using the best of Focal technologies, Clear offer the sensation of listening to your favourite music in a space that no longer has limits. Discover the emotion of music, thanks to Clear's ability to recreate the tiniest details of the recording.
     
    Manufacturer's product page: https://www.focal.com/headphones/clear/
    clear_specification-sheet.pdf clear_press-release.pdf
  5. Upvote
    The Computer Audiophile got a reaction from lucretius for a product, Roon Reviews   
    The music player for music lovers
    Forget everything you know about music players. Music is an experience, and Roon reconnects you with it.
     
    Roon looks at your music and finds photos, bios, reviews, lyrics, and concert dates, and makes connections between artists, composers, performers, conductors, and producers.
    What you get is a searchable, surfable magazine about your music.
     
    Manufacturer's product page: https://roonlabs.com/
  6. Upvote
    The Computer Audiophile got a reaction from lucretius for a product, Mytek Brooklyn DAC+ Reviews   
    Brooklyn DAC+ is primarily reference USB2 DAC, but also line and phono analog preamplifier and a reference headphone amplifier. It integrates digital and vinyl hi-res playback for reference listening on headphones and speakers. All integrated functions are of the premium grade. Both phono preamplifier as well as a headphone amplifier are of the highest quality, they challenge dedicated units costing thousands of $$.
     
    SPECIFICATIONS :
    CONVERSION: up to 384k, 32bit PCM, native DSD
    up to DSD256, DXD, 130dB Dynamic Range
    MQA HI-RES DECODER: built in certified hardware
    MQA™ decoder
     
    DIGITAL INPUTS: USB2 Class2 (OSX, Linux driverless,
    all formats), AES/EBU (PCM up to 192k, up to DSD64 DOP), 2x S/PDIF (PCM up to 192k, up to DSD64 DOP), Toslink/ADAT 2x S/PDIF (PCM up to 192k, up to DSD64 DOP), SDIF3 DSD up to DSD256
    CLOCK: “Mytek Femtoclock Generator™” 0.82ps internal jitter, Wordclock Input and Output (allows stacking multiple units for multichannel operation,
    includes mch DSD)
     
    ANALOG OUTPUTS: RCA, balanced XLR, simultaneous,
    50 Ohm impedance
    HEADPHONE OUTPUTS: Reference High Current,
    High transient Headphone Amp, 500mA, 6 Watts,
    dual headphone jacks, designed to drive hard to
    drive headphones.
     
    BUILT-IN ATTENUATOR: Choice of 1dB step analog attenuator, separate for main out and head- phones,
    1dB step digital 32 bit attenuator and purist relay bypass.
    BUILT-IN ANALOG PREAMP: Line level input or
    Phono M/M, M/C input, relay controlled.
     
    AUDIO INTERFACE FUNCTION: All digital inputs can
    be routed into computer via USB2. Allows connection
    of external digital sources such as CD Players and
    digitizing ADCs.
    REMOTE: Included, universal remote capable
    FIRMWARE: Upgradable via USB Control panel
    WORLDWIDE POWER SUPPLY
    OPTIONAL DC/BATTERY POWER INPUT: 12VDC
    DIMENSIONS: WxDxH=8.5x8.5x1.74”=216x216x44mm
    WEIGHT: 4lbs, 2kg
    WARRANTY: 2 years
     
    Manufacturer's product page: https://mytekdigital.com/hifi/products/brooklyn/
    Brooklyn_DAC+_manual.pdf Brooklyn_DAC+_brochure_OCT2017_A4.pdf
  7. Thanks
    The Computer Audiophile reacted to Mycenius for a product, Focal SM9 3-Way Monitor Reviews   
    This monitoring speaker establishes itself as a reference thanks to the precision of the stereo image, its capacity to reproduce each of the micro details of the audio signal, as well as unconditional respect of the original dynamics. One of the major SM9 innovations lies in the fact of offering 2 monitoring speakers in only one and unique cabinet. The SM9 is thus composed of 2 monitors: a 3 way monitor and a 2 way monitor. Comes in a 'left' and a 'right' speaker configuration (indicative price listed is for a pair).
     
    The pure Beryllium inverted dome tweeter offers a perfectly linear frequency response and extremely precise and detailed treble. The 6.5-inch ‘W’ composite sandwich cone woofer offers perfect neutrality thanks to the optimised control of rigidity, lightness and damping. The 8-inch speaker driver, combined with a ‘W’-shaped passive radiator, enables the perfectly precise reproduction of the deep bass register.
      
    Focal utilise unique technologies (that are potentially unmatched by any other manufacturer), details of two key ones are here:
    Beryllium Tweeters: https://www.focal.com/en/focal-teach/beryllium-tweeter
    "W" Cone Drivers: https://www.focal.com/en/focal-teach/the-w-composite-sandwich-cone
      
    Manufacturer's product page: https://www.focal.com/en/pro-audio/monitoring-speakers/sm9/monitoring-speakers/sm9
      
    Manufacturers product presentation video: 
     
    SM9_Manual.pdf SM9-Specification-sheet-2945.pdf
  8. Thanks
    The Computer Audiophile got a reaction from RickyV for a product, RAAL-requisite SR1a Reviews   
    True Ribbon™ SR1a.
    The world's first Earfield™ headphone monitor.
     
    The SR1a by RAAL-requisite is the world's first Earfield™ headphone monitor. Experience mixing, mastering, and home listening with unparalleled accuracy and realism in a soundfield devoid of room acoustics and comb-filtering caused by work surface reflections. Earfield™ technology delivers unheard of program accuracy and a speaker-like soundfield experience.
     
     
    Manufacturer's product page: https://raalrequisite.com/sr1a-earfield-monitors/
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