DSD MasteringSACD ISODXD Output352.8/384kHz

Where sound movesquality is reborn

Hand your Hi-Res lossless music to us — DSD mastering and SACD ISO authoring.
Every track, delivered with major-label quality.

⚙Independently developed dpdo engine · DSD64–DSD512 · DXD · 44.1k/48k dual base rates · leading DSD↔PCM both ways
Start a ProjectOur Services
High-fidelity quality·Lossless delivery·SACD ISO·DXD 352.8/384k·Trusted by independent musicians
Technical specs

Numbers speak

Quantified parameters of the in-house dpdo engine, verified in competitive evaluations.

7
order
MASH 4-2-1 equivalent noise shaping
Baseband noise below -140 dBFS, on par with Saracon / HQPlayer
65,536
taps
Kaiser sinc upsampling filter
Stopband >100 dB, beating FFmpeg 30 dB and sacd_extract 40 dB
64
bit
Double-precision internal arithmetic
IEEE 754 double precision; competitors mostly 32-bit float or 24-bit int
< -120
dB
THD+N @ 1kHz
Limited by the 65536-pt FFT analyzer noise floor; actual distortion lower
64×～1024×
oversampling
Full range DSD64 to DSD1024
2.8 MHz ~ 45.2 MHz, single-stage, no accumulated rounding error
512×～16×
lead
DSD→PCM reverse FIR taps
Competitors 32-128 taps vs DpdoEngine 512-65536 taps, stopband >160 dB (incl. Biquad)
How it works

01 Three steps

From your lossless files to a DSD master — simpler than you think.

01

Upload files

Send us your finished mix as lossless WAV/FLAC/AIFF. Singles or full albums welcome.

→
02

DSD mastering

We apply noise reduction, dynamics optimization, DSD modulation and SACD ISO authoring. Every track gets a mastering report.

→
03

Deliver & pay

We deliver the DSD master files + SACD ISO. You confirm, then pay. Your work instantly gets a high-spec edition.

Services

02 Choose your spec

From entry-level to flagship — each option lets you hear the difference.

🎵

DSD Mastering

Convert your Hi-Res lossless audio through a 64-bit double-precision floating-point pipeline into DSD64/128/256/512, supporting both 44.1kHz and 48kHz base rates. The resulting DSD files can be authored into SACD ISO or played back directly.

  • ✦ Source noise reduction & dynamics optimization with noise analysis + adaptive algorithms
  • ✦ Multi-stage MASH noise shaping: equivalent 7th order, inter-stage TPDF dithering eliminates idle tones
  • ✦ Upsampling filter: single-stage Kaiser sinc, 65536 taps / stopband >100 dB
  • ✦ Delivery in DSF / DFF / DFF+DST (24-bit precision output)
💿

SACD ISO

Author your lossless album into an ISO image compliant with the SACD Red Book specification. Supports both 44.1kHz and 48kHz base-rate systems (48k-base DST compression is a proprietary technology), with full metadata and ISRC.

  • ✦ Stereo + Multi-CH support, up to 6 channels of DST lossless compression
  • ✦ 48kHz base-rate DSD/DST SACD — proprietary technology not available in mainstream toolchains
  • ✦ Complete SACD metadata: album/artist/cover/genre/year/ISRC
  • ✦ Delivery as .iso file (compatible with 48k-base SACD players)
  • ✦ SACD ISO available on custom USB drive, plug-and-play
📋

Mastering Report

Every project includes a professional mastering report PDF showing before/after spectrum comparison, dynamic range (DR), THD+N distortion analysis, noise-shaping curves and 20+ technical parameters, following the IEEE 124 standard format.

  • ✦ Spectrum analysis comparison: FFT 65536-pt, 0.67Hz resolution at 44.1kHz
  • ✦ Dynamic range metrics: DR statistics + peak/true-peak table + loudness (EBU R128)
  • ✦ Noise-shaping curves: MASH residual noise spectrum + psychoacoustic weighting
  • ✦ PDF report delivery with full processing-chain documentation
🎚️

DXD Mastering

Upsample PCM to DXD format (352.8kHz/384kHz 24/32-bit) using the same engine-grade FIR upsampling chain as DSD (65536-tap Kaiser sinc), outputting WAV/Wave64/FLAC — compatible with all major DAWs, no special player required.

  • ✦ Same 65536-tap Kaiser sinc upsampling filter as the DSD engine, stopband >100 dB
  • ✦ Output 32-bit float WAV / Wave64, 24-bit FLAC — directly editable in any DAW
  • ✦ Steep Kaiser-sinc low-pass + downsampling to 8x original rate (44.1k→352.8k, 48k→384k)
  • ✦ Skips noise shaping and Σ-Δ modulation — preserves pure PCM precision as an alternative path
Pricing

03 Transparent, no hidden fees

You pay for quality, not gimmicks.

Popular

Trial

DSD64/128/256/512/1024/2048/4096
¥30% off

per track

  • ✦Full-feature trial — no charge if you're not satisfied (one-time trial only)
  • ✦Launch offer: experience our newly released mastering service
  • ✦Valid until August 31, 2026
Choose this plan

Basic

DSD64/128
¥299

per track

  • ✦DSD64 (2.8MHz, 7th-order MASH) mastering
  • ✦DSD128 (5.6MHz) mastering, noise-shaping SNR >120 dB
  • ✦SACD ISO authoring with standard metadata
  • ✦Mastering report PDF: spectrum + DR + THD+N
  • ✦Noise reduction & dynamics optimization (14-module FX pipeline)
  • —DSD256/512 and DST compression
  • —Multi-format delivery (DSF+DFF+ISO)
  • —Custom USB drive delivery
Choose this plan
Popular

Pro

DSD256/512
¥599

per track

  • ✦Full DSD64/128/256/512 range (64x–1024x oversampling)
  • ✦DXD output (352.8kHz/384kHz 32-bit float WAV/Wave64/FLAC)
  • ✦SACD ISO authoring + DST lossless compression (2:1–3:1 ratio)
  • ✦Deep mastering report: spectrum, DR, THD+N, MASH residual noise, EBU R128
  • ✦Multi-format delivery (DSF+DFF+ISO+DXD)
  • ✦Noise reduction & dynamics optimization (14 FX modules + transient shaping)
  • ✦Priority scheduling (completed within 48 hours)
  • —Custom USB drive delivery
Choose this plan

Custom

Full service
¥from 2,000

negotiated per project

  • ✦Per-track refinement: individual noise reduction, dynamics, harmonic excitation
  • ✦Special band optimization: restorative mastering for older recordings
  • ✦Multi-format mastering delivery: DSD + DXD + PCM versions
  • ✦Priority scheduling for long-term clients + dedicated technical support
  • ✦Dedicated consultation: format strategy, release advice
  • ✦Custom USB drive delivery
Contact us

Album projects for Hi-Res lossless music qualify for a discount. View full pricing →

Works

04 Client cases

Every collaboration is a work we craft with care.

DSD256

Your work belongs here

Collaboration case studies coming soon.

SACD ISO

Coming soon

We are mastering for several independent musicians right now.

DSD512

Contact us

Want to be featured? Start a project →

✦
✦
✦

Ready to make your work
sound different?

Send your lossless files and we will craft your DSD master. Full refund before production; free revisions after delivery.

Start a Project
Careers at SonicBro

We are hiring.
Craft sound beyond hearing.

DSP algorithm engineers, mastering engineers, web developers — join us in building the dpdo engine and the next generation of Hi-Res audio.

Into the sound · Remote-friendly
Browse Positions