Dossier — iBasso DC-Tonfa
The brochure speaks; the silicon answers. What follows is what each has said.
+ Vendor page › +Claims breakdown
| Claim | Bucket | Witnessed | Verdict |
|---|---|---|---|
| PCM 32-bit / 768 kHz | PCM | Alt 1, Subslot 2 — 16-bit PCM. Sample Rates Supported (kHz): 44.1 48 88.2 96 176.4 192 352.8 384 705.6 768Alt 2, Subslot 3 — 24-bit PCM. Sample Rates Supported (kHz): 44.1 48 88.2 96 176.4 192 352.8 384 705.6 768Alt 3, Subslot 4 — 32-bit PCM. Sample Rates Supported (kHz): 44.1 48 88.2 96 176.4 192 352.8 384 705.6 768 | ✓ Match |
| Native DSD512 | DSD | Alt 4, Subslot 4 — Type-1 RAW 1-bit DSD. Sample Rates Supported (kHz): 44.1 48 88.2 96 176.4 192 352.8 384 705.6 768 (DSD64 to DSD512) | ✓ Match |
Remarks
A clean concordance. iBasso lists the DC-Tonfa at PCM 32-bit / 768 kHz and native DSD512, and the descriptor witnesses exactly that: native 16-, 24-, and 32-bit containers, each carrying the full rate ladder from 44.1 all the way to 768 kHz, and a raw DSD alt provisioned from DSD64 through DSD512. Where iBasso names the transport outright — native — the descriptor agrees: DSD arrives on its own raw alt, not folded into a PCM frame.
Behind that ordinary-looking descriptor sits an unusual converter. The Tonfa carries a discrete R2R ladder — resistors, not a packaged delta-sigma part — with its own compensation network and clocking. None of that reaches the USB face: the descriptor witnesses the transport, not the silicon behind it. The same vendor block in this Concordance fronts a delta-sigma iBasso a few identities away, and the two present the identical wire. What the descriptor certifies is the pipe; the ladder and its oscillators stand outside its gaze.
+ See the full Concordance +