Pure Vinyl - High-resolution digital vinyl LP playback, editing and archival and music server software

Pure Vinyl

High-resolution digital vinyl LP playback, editing and archival and music server software (Channel D Pure Music® is included for FREE with Pure Vinyl)

Channel D  Channel D

Stereophile - 2010 Product of the Year Award Winner
The Absolute Sound - 2013 Product of the Year Award Winner

Channel D  

Stereophile - Editor's Choice Recommended Components, 2010 through 2017

Channel D  Channel D  Channel D Channel D

The Absolute Sound - Editors' Choice Award Winner, 2014 through 2017

A Pure Vinyl 5 preview version download has been posted. The Pure Vinyl 5 preview can be used in place of Version 4 to embrace the functionality of major and minor new features; download link can be found on our News page. This is a free upgrade under a Pure Vinyl 4 license code (contains the string "PuVa-40000" or higher). A discounted upgrade for Pure Vinyl 3 and earlier licenses is available. Click the Buy button for more information.

Pure Vinyl 5 includes 50 new features, user interface and performance improvements over Pure Vinyl 4.

A few of the major new features added in Pure Vinyl 5:
  • Internet lookup using only the catalog number from the LP jacket (view video)
  • Automatic pop and click removal
  • Substantially revised and simplified yet more functional user interface
  • Automatic, time-saving track locator with improvements over Version 4 (view video)
  • Incorporates the latest version of Pure Music®

Channel D 
* The track locator functions best on albums with breaks between tracks, typical of most LPs. The track locator also is designed to function with those "live" or classical albums mixed with negligible interruptions between tracks, and to accommodate fade-ins or fade-outs / final note decays. The free demo download allows evaluating its performance in your own usage scenario.

Linking analog LP playback with the precision of high-resolution digital music reproduction
  • LP Playback / Recording / Editing / Archival
  • Precision Optimized 64-Bit RIAA Vinyl Correction Curve (IIR design, with phase response identical to analog RIAA correction)
  • Directly links audiophile caliber analog vinyl playback and the advantages of high-resolution (192 kHz / 24 bit) digital audio reproduction and recording / archival
  • Single point of integration for analog and digitally sourced music
  • Supports 192 kHz 24 bit Sampling for State of the Art, High-Resolution Digital Quality
  • Painstakingly Designed to Preserve the Warmth, Clarity and Dynamics of Vinyl Reproduction
  • Pristine, 64 bit (Double Precision) Floating-Point Internal Signal Path for No Added Distortion 6
  • Helps Optimize Turntable Setup by Providing a Repeatable Baseline: Just Record and Compare
  • Unique, "Scratch" Style, Grab & Spin "Vinyl Cueing" Nondestructive Audio Editor
  • Automatic Track Locator
  • Cueing Trigger "Noise Gate" feature Automates Recording Process; Just Lift Stylus and Flip the Record
  • High Quality 64-Bit Sample Rate Converter for Exporting CD Format Tracks to Digital Players (iTunes, iPod, CD-R)
  • ZEPHRR® Zero Phase Shift 64-Bit Rumble Filter for Resampling; Adjustable Frequency, up to 96 dB / octave slope
  • Adjustable Noise-Shaped Dithering for Word-Length Reduction
  • Built-In Correction Curves for pre-1955 Vinyl / Shellac
  • NetSend for Streaming Audio to Other Computers (up to 192 kHz, 24 bit, uncompressed)
  • Nondestructive, Integrated Pop and Click Editor / Peak Finder
  • Ultra High Quality Integrated Multithreaded Sample Rate Converter
  • Virtual Line-Level Preamplifier / Source Selector (for audio interfaces with more than 2 analog input channels)
  • Built-In 2/3/4-way Crossover (with 64 bit internal resolution and Adjustable Time / Phase Alignment) (for audio interfaces with more than 2 output channels)
  • AudioUnit Plug-In Support (add parametric / graphic EQ, etc.)
  • "Picture Disc" Feature (Integrate Album and Label Artwork with Vinyl Image)
  • Space-Saving Rendering of Virtual iTunes "Bookmark" Tracks For Playlists from Vinyl Recordings (Without Creating Separate Physical Tracks)
  • Also Built-In: Channel D's Acclaimed Pure Music Digital Music Player

Comments from Pure Vinyl users    |

Software RIAA Curve* Advantages for Real-Time Playback

*Pure Vinyl's RIAA and other curves are continuous time, minimum-phase filters, the same as analog filters.
  • Perfect Interchannel Amplitude and Phase Match
  • Perfect Amplitude and Phase Match to RIAA Curve
  • No component (resistor / capacitor) temperature variations or aging effects / deterioration
  • No Added Distortion or Noise (resistors / capacitors / inductors not used for RIAA curve)
  • Continuously Adjustable (slope and cutoff) Rumble Filter
  • Dozens of alternate curves included (pre-RIAA)

Software RIAA Curve Advantages for High-Resolution Digital Transfer

All of the above advantages, plus:
  • Increased capture headroom and resolution (up to 12 db / 2 bits)**
  • Channel D ZEPHRR® Zero Phase Shift, Continuous-Time (not FIR) Rumble Reduction filter***
  • Facilitates pop / click removal because impulses may be removed pre-RIAA filter
**This makes setting the recording levels less critical: aiming for a 12 dB window instead of a 0 dBFS bullseye.
***A zero-phase-shift rumble filter cannot be made with analog circuitry.

Playing LPs with Pure Vinyl

What you need

You'll obtain spectacular results with any equipment depicted below and your existing turntable setup. (In case you have a USB turntable, adding an ADC/DAC such as the Scarlett below and using the turntable analog output instead of the USB output will deliver a substantial improvement in quality.)

Example #1: Entry Level ADC/DAC (built-in preamps): Focusrite Scarlett 2i2 (2nd Gen) 192/24 USB Audio Interface (available at Amazon and other retailers). Playing LPs with Pure Vinyl

The Scarlett and similar ADC/DACs include adjustable-gain, built-in preamplifiers that accommodate low output moving coil as well as moving magnet cartridges. A set of adapters is required to connect your turntable (RIAA EQ provided by Pure Vinyl software). A $50 adapter discount coupon is available if you have purchased a Pure Vinyl license; or $50 off a Pure Vinyl license after an adapter purchase.

There are other ADC/DACs at higher prices, offering better quality analog to digital and digital to analog conversion (plus higher output channel count, which can be used for multi-amping via Pure Viny's built-in adjustable crossover). But the disparity in performance across different prices is not as great as it was even just a few years ago. Outstanding quality is now available for extremely reasonable prices.

Incidentally, a line-level preamp isn't required; the line outputs of the ADC/DAC may be connected directly to your power amplifier(s), with playback volume controlled in Pure Vinyl software.

Always choose an ADC that includes a DAC in the same unit, such as shown above or below, rather than adding a stand-alone ADC to an existing digital playback system and using a stand-alone DAC for audio monitoring during recording (or "live" LP playback). This would be impractical, for reasons explained here. Of course, you can use any DAC for playback of your recordings; the distinction is that it's impractical to use a stand-alone DAC for real-time monitoring during recording.

Example #2: Premium ADC/DAC plus separate preamp: Used in our audio trade show exhibit rooms for the last several years, this also comprises the heart of the reference LP to digital transfer system used at Channel D.

Playing LPs with Pure VinylThe Lynx Hilo 192/24 ADC/DAC (with unique, user-configurable touchscreen display) is popular with our users who are seeking the highest quality LP to digital transfers. The Hilo was designed and built in the USA by top audio engineers (and musicians). Lynx has been in business for over 20 years and the quality of their products is unmatched. The Hilo will also deliver superb playback of your digital music files, and supports native DSD audio output.
Playing LPs with Pure Vinyl
Mastering-quality ADC/DACs such as the Hilo usually have line level inputs requiring a separate phono preamplifier. To take advantage of the RIAA EQ feature in Pure Vinyl software, a "flat" (non-RIAA) preamplifier is needed. An excellent choice is our Seta Model L for low output moving-coil cartridges. Also built in the USA, the Seta has been rated a "Class A" phono preamplifier by Stereophile magazine since 2010 and listed in Stereophile editor John Atkinson's Associated Equipment sidebar for his audio component reviews for over 3 years, since December 2013. This combination will deliver unmatched results for high resolution vinyl transfers. Our Seta Piccola (MC/MM) and Lino (MC) phono stages also represent high performance, less expensive alternatives to the Seta Model L, and also are good matches with the Hilo. In a 2015 shootout of seven different ADCs on Michael Fremer's Analog Planet website, the $4,750 (total) Hilo ADC + Seta Piccola combination tied for first place in reader votes as sounding the best, based on the posted sample files. The other first place winner employed a $26,000 phono preamp + $2,600 step up transformer - not including the price of the analog to digital converter.

Playing LPs with Pure Vinyl

Playing LPs with Pure Vinyl
The PLAY mode of Pure Vinyl was designed to closely recreate the experience of vinyl playback. Just as in the editing process, the stylus can be dragged and dropped anywhere on the surface, to cue a particular track. This is made simple by employing the spinning vinyl record metaphor. To flip the record, juct click on the label. Records with more than two sides (double, triple, etc. albums) can be used with the player - each click moving to a different side of the next disc.

Pure Vinyl also can automatically "flip" the record at the end of the side - for uninterrupted playback in "album" format.. but better, because there's no stylus wear with repeated play, nor a vinyl surface to scratch. Every play sounds like the first one - at super quality 192 kHz 24 bit.

Recording LPs with Pure Vinyl

Recording LPs with Pure Vinyl

The Pure Vinyl Recorder application was designed from the ground up specifically for creating high-resolution, archival quality transcriptions of your precious records - at sample rates and resolutions up to 192 kHz / 32 bit.

Naturally, the Pure Vinyl Recorder can apply precision RIAA EQ in software... high-quality output is provided for flawless monitoring while recording, using the software-based EQ, if desired.

The adjustable, threshold-based triggering feature doesn't start recording until the needle drops - and even can be configured to omit that "needle drop" part of the recording. When the tonearm is lifted at the end of the side, the triggering pauses the recording, giving you the opportunity to flip the record, clean the other side, grab a snack, etc. At this time, the application is "deaf" to incoming audio. When ready to resume recording, just click the Lock button, re-arming the recording.

Pure Vinyl scrupulously maintains a high-quality 64-bit floating-point (double precision) processing path from the moment that the sound is sampled, through the entire downsampling operation, and on to monitoring and playback, to insure that you don't lose any of your precious sound.

Downsampling (decimation), if creating track files in other formats is desired, is properly performed, using widely vetted techniques. For example, 192 kHz audio is first upsampled and zero-padded, then antialias filtered and decimated.

All sound file formats used are lossless: AIFF or Apple's CoreAudio (.caf). The latter format permits recordings of unlimited duration with any sample rate or sample size. Exporting sound files to 16-bit (or 24 bit) 44.1 kHz CD format is done using Apple Lossless Compression (to .m4a) or AIFF. If lossy (mp3, aac) compression is needed, the pristine audio files can be compressed by converting via iTunes.

Editing Digitized LPs with Pure Vinyl

Editing Digitized LPs with Pure Vinyl
The inherent surface noise of vinyl makes track cue assignment difficult, because music fades are contaminated with surface noise. Linear-style waveform editors are not quite up to the task of working with digitized vinyl. Using apparently quiet waveform locations as track boundaries, without careful auditioning of selected marks, is likely to result in track marking mistakes.

Pure Vinyl uses a patented "virtual vinyl" cue guide image generator coupled with a DJ-inspired "scratch" technique where the record is "grabbed" and "spun" to accurately locate cueing points. A Looping feature allows precisely honing or verifying the locations of track intros and fade-outs.

Pure Vinyl's proprietary SNAPTO Automatic Track Locator, not found in any other software product, makes quick work of the potentially tedious task of locating track cue-ins. LPs do not fade to "digital black" between tracks, making track location much more difficult than editing purely digital recordings. However, our specialized track locator algorithm handles this difficult task with aplomb. Likewise, the Tidy Tail feature automatically trims silence from the ends of tracks, even in the presence of gradual fade-outs in recordings.

Fixing Vinyl Flaws in Pure Vinyl

Fixing Vinyl Flaws in Pure Vinyl
Pure Vinyl incorporates features to streamline this tedious (but ultimately rewarding) task. Iconic overlays applied to the vinyl image accurately depict audible blemishes and peaks. Interpolation and sample cloning can be used to clean them. The peak finder is invaluable in setting proper levels. Just click on a peak in the list (generated automatically during vinyl rendering) and the record rotates and stylus moves to the exact location of the peak / pop on the disc image.

"Fixed" edits can be incorporated nondestructively during playback of high-resolution master transcription (if used). Pop fixes can be applied when exporting individual tracks. Again, the original file is preserved, and you always can go back and modify your edits.

Third party software (such as the popular and inexpensive ClickRepair) can be used with Pure Vinyl music files for overall restoration or noise reduction, if desired.

The peak/pop editor also can be used to "calibrate" the "rotational speed" of the vinyl image. Turntables are subject to rotational speed error. However, the periodic nature of the scratches on the record surface can be used to advantage. At 33 1/3 RPM, a scratch or blemish across two or more grooves will be repeated at an interval of exactly 1.800 seconds. A future release of Pure Vinyl will incorporate this into precision pitch correction of exported music files (that is, when we are satisfied with the quality of the resampling algorithm we are developing).

After track assignment is complete, the individual tracks can be exported automatically as AIFF or Apple Lossless Compressed sound files for incorporation into digital music players, such as iTunes. Alternatively, track edits can be used with Pure Vinyl's powerful, patent-pending "bookmark" track feature in iTunes that points to the master recording file, allowing incorporating vinyl tracks into iTunes playlists without needing to waste disk space on separately rendered track files.



Try Pure Vinyl FREE for 2 weeks! Click Demo to download.

Pure Vinyl 5 is is a free upgrade for Pure Vinyl licenses purchased after March 31, 2014 (just download the new version and replace Pure Vinyl 4; your license will automatically be recognized). For previous purchases, a discounted upgrade is available. Click Buy for more information.

Pure Vinyl 5 System Requirements:
Mac OS X 10.6.8 or later (including Sierra / OS 10.12); Intel CPU, 8 GB or more RAM. Minimum Intel Core i5 or i7 class CPU required for using the automatic pop and click removal feature.

Pure Vinyl Reviews

"...pay attention to the digital RIAA's finesse and robust attacks - particularly in the bottom octaves - and its unerring tonal neutrality... lifting of veils from music... Listen and that's what you're sure to hear, without an additive penalty in terms of the usual digital edge and etch... Pure Vinyl plus peripherals offers a relatively inexpensive way to achieve an extremely high level of vinyl playback."
Michael Fremer, Stereophile August 2010 Read review - purchase issue

"...the most efficient LP-to-PCM digital transfer system I've used." Click Here to Download a Copy of the Review Steven Stone, The Absolute Sound - December 2013

"...it has not only met my expectations, but exceeded them." Click Here for Review Larry Borden, Dagogo - May 2014

" the results were stunning- some of the quietest, best sounding vinyl playback I have ever heard." Nels Ferre, enjoythemusic.com - March 2010

"One of the nicest and most feature-laden software packages for transferring LPs to digital files." Steven Stone, The Absolute Sound - February 2009 (Issue 190)

Pure Vinyl User Comment

"Wow. It is hard to explain what I am enjoying more... the vinyl recordings or the quality of the Pure Music upsampling through the TC Impact Twin. I am glad I stayed on the path and bothered you so much. What a pay off. My HDCD player is now second class. The quality even exceeds the SACD player I just had on loan. The output from your software just matches up with my vintage system components in a very synergistic way. I do not have top of the line stuff but you have helped take the old stuff to an entirely new level.

"I ended up dismantling the tonearm wire that came with my tonearm. I added the XLR connectors with the resistors you recommended. Dead quiet. My Thorens 125th anniversary compilation recording was the first recording. Vinyl has always been my best quality source and that quality is a memory with the RIAA curves applied by the computer. Thank you very much,
- Peter Bliss

Pure Vinyl Features

High-Quality Playback - Pure Vinyl applies an extremely accurate inverse - RIAA vinyl correction curve in real-time during playback. Your music is reproduced as accurately as possible, by eliminating the distortion and frequency response errors of analog based hardware.High Quality Playback Using Software RIAA Correction does not "reduce resolution." Technical "white paper" presented at the Audio Engineering Society (AES) Convention in 2007 and explained on FAQ.

Sample 192 kHz / 24 bit snippet of "Fever," from the new "Elvis is Back!" 45 RPM 2-disc Analogue Productions reissue LP, rated "10" for sound quality by musicangle. Edited from a "Flat" 192 kHz transfer to digital using a Seta® Model L preamplifier and Lynx audio interface. RIAA correction via Pure Vinyl SRC "pass through" setting, and Pure Vinyl's adjustable 72 dB / octave ZEPHRR® zero-phase-shift subsonic filter. If your system cannot currently play 192 kHz natively, here is a 44.1 kHz version, downsampled with Pure Vinyl's high-quality SRC. Both samples are in Apple Lossless format.

Recording - Pure Vinyl was designed specifically for creating high-resolution, archival quality transcriptions of your precious vinyl, at sample rates up to 192 kHz (or higher). Pure Vinyl automatically can downsample and mirror to CD or DVD-A formats during recording, for digital jukebox use. Pure Vinyl uses standard audio file formats: AIFF, Sound Designer II, m4a (losslessly compressed) and Apple CoreAudio format (either uncompressed or losslessly compressed).

Revolutionary Editing/Exporting - Pure Vinyl uses the "scratch" style, grab-and-spin metaphor employed by professional DJs, with "needle drop" track cueing. It's an intuitive, fun way to assign track markers - instead of being unnecessarily tedious, as with conventional, linear-style waveform editors. After editing, individual tracks automatically can be extracted and exported from the original file.

Peak Detection / Normalization / Pop and Click Removal - Pure Vinyl incorporates features to streamline this tedious (but ultimately rewarding) task. The built-in peak finder and waveform inspector is useful for setting proper normalization levels.

Feature Pure Vinyl
License Price $299
Number of Computers per License UNLIMITED see footnote 1
Integrated Computer Audio Player Software Included Channel D's award winning Pure Music, with DOZENS of additional, unique features including DSD playback, is Included for FREE
One-Click DSD DAC Setup in Player Software yes
Upgrade Path from Standalone Audio Player Software Difference in Price Between Pure Music and Pure Vinyl
Customer Support Free (email, telephone, and Remote), Unlimited
Customer Support Cost ALWAYS FREE
Remote Session Customer Support / Setup Assistance FREE (anywhere in the world)
Runs on Intel AND PowerPC (G5) Mac Computers yes
Designed from scratch for the express purpose of recording and integrating vinyl with digital audio YES
Supported Sample Rates for Analog to Digital Conveters (ADCs) 44.1, 48, 88.2, 96, 176.4, 192 kHz
Supports Built-In Audio Input yes
Pop / Click Removal yes
Sound Restoration Via Inexpensive Third Party ClickRepair Software see footnote 2
Maximum Recording Time At 192 kHz / 24 bit Unlimited (available hard drive space)
Audio Output Level Normalization yes
Broadcast Standard LKFS Perceived Loudness Normalization yes
Automatic Normalization to Per-Track Peak or Loudness Levels yes
"Flat" Recording Option with Real-Time RIAA Compensation Curve In Software yes
Conventional, Linear - Style Waveform - Based Track Editor yes
Patented, Intuitive Vinyl Image Cue Guide Track Editor yes
Track Export to AIFF/Apple Lossless; 16/24 Bit; optional 96/88.2/48/44.1 kHz Sample Rate Converter yes
Multi-threaded Track Processing Fully Uses All CPU Cores for Fast Throughput yes
ZEPHRR® Zero-Phase-Shift Rumble Reduction Filter for Track Export yes
Automatic Signal Level Triggering for Easy Recording Automation yes
Automatic "Snap - To" Track Cue-in Finder yes
Automatic Track Location and Assignment yes
Automatically Trims Silence at End of Tracks yes
Sound Looping Editor with Automatic Gain Riding yes
Jump to Album Side command yes
Peak Clipping Monitor / Overs Counter yes
Input Channel Balance Control yes
Optionally Records to Lossless Compressed (ALAC) File Format yes
Create iTunes Bookmark Tracks (patent pending) for Playback (saves disk space) yes
Supports Audio Plug-Ins yes
Real-Time EQ During Live Vinyl Playback yes
2/3/4-way crossover feature yes
Application File Size see footnote 3 Less than 8 MB
User's Guide 49 pages plus version release notes
Demo 15 Day


1. The license to Pure Vinyl permits installing the software on more than one computer, provided:
(a) All computers are used for personal, not business or company use;
(b) The person who purchased the software license owns all of the computers;
(c) Only one copy of the software is running at any time, per purchased license.
Note: The NetSend feature does not require Pure Vinyl to be installed or running on the receiving computer. See the Pure Vinyl User's Guide for more information.

2. Pure Vinyl users with a need for automatic sound restoration usually turn to third party applications such as ClickRepair or DeNoise, which cost just $40 each and can be used to process audio recordings made by Pure Vinyl. In addition, click and noise removal is far more effective when used in conjunction with "flat" recordings (RIAA compensation applied in software), a key feature of Pure Vinyl.

3. For reference, Adobe Photoshop CS 7 is 45 MB; and Adobe Photoshop is a very complex application! Pure Vinyl is built with tight, optimized code, written from the ground up for this specific purpose, and still maintains a lightweight size of less than 8 MB in spite of its many features. Not bloatware!

---- Note: our products may only be used for the reproduction of materials that the user is legally permitted to reproduce.