Dossier — JCALLY JM98MAX
The brochure speaks; the silicon answers. What follows is what each has said.
+ Vendor page › +Claims breakdown
| Claim | Bucket | Witnessed | Verdict |
|---|---|---|---|
| PCM 32-bit / 384 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 | ↗ Mismatch ↑ |
| Native DSD256 | 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) | ↗ Mismatch ↑ |
Remarks
JCALLY rates the JM98MAX at 32-bit / 384 kHz PCM and native DSD256 — the native ceiling of the Cirrus CS43198 converter inside it. The descriptor, though, declares more: native 16-, 24-, and 32-bit containers to 768 kHz, and a Type-1 raw one-bit alt reaching DSD512 — a full doubling beyond both the printed spec and what the CS43198 can itself convert.
The gap is the USB bridge's doing, not the converter's. The controller advertises a ceiling the DAC behind it cannot reach, so the wire over-states the silicon. The Concordance witnesses the wire, and the wire exceeds the claim on both counts; it is recorded here as found, with the caveat that the audible ceiling belongs to the converter, not to the descriptor.
+ See the full Concordance +