What ASIO browser? USB audio alternative
An ASIO browser is not a marketing extension. It is a driver-class claim: exclusive-mode buffers and a real-time path to the interface, not the Web Audio sandbox. With Nightclub PRO, Capsule delivers that path — ASIO under 5 ms, about 2.7 ms at 128 samples for DJ work. Chrome cannot reach that by installing an extension. Capsule is still a browser, not a Serato clone; on this page, the subject is latency.
What an ASIO browser actually is — exclusive audio, not a mixer skin
The sandbox is the wrong tool
Typical browsers stay on sandboxed Web Audio, around 50 to 100 ms on the pro-audio page. That is fine for a YouTube tab and late for a cue. An ASIO browser means the client can open a native ASIO device: Settings > Audio, 44.1 or 48 kHz and a small buffer if the interface allows. Capsule Nightclub PRO is a Rust native bridge. WASAPI Exclusive sits around 10 ms, CoreAudio under 10 ms and JACK under 5 ms, so the same professional idea exists on Mac and Linux. Chrome extensions cannot sign that path. This page is about latency and exclusive mode — MIDI Learn is covered by the MIDI-browser guide, and the whole DJ category lives in the DJ-browser guide.
Buffers you choose through a native driver path
128 samples at about 2.7 ms is a recommendation for DJ work, not a religion. Unstable interfaces want a larger buffer. Capsule does not become VirtualDJ or Serato by exposing ASIO — those suites remain dedicated mixers, with their own alternative pages. Komby DJ 4-Deck is a web app inside the ASIO browser: four decks with waveforms, EQ, effects, hot cues and loops. Two decks on komby.music stay on Web Audio. PRO unlocks the native clock plus MIDI and DVS as a timecode bridge rather than a cloned booth. Demucs stems are extra rather than hidden inside the 15 MB.
Offline mix, with the network only when you broadcast
Like historical desktop DJ software, local files on disk or USB with ASIO, MIDI, DVS and recording do not need club internet. Icecast needs a network. The PRO licence has a seven-day offline grace and then re-checks online. That matters because an ASIO browser you carry to a basement with dead Wi-Fi must still clock the interface. The USB-browser and portable-browser guides cover the physical and folder stories; the download sits on the main site.
Soundcheck is the documentation
Open the pro-audio page, pick the ASIO driver the venue actually has and confirm output. Then map hardware on the MIDI-browser guide’s terms. Record WAV, MP3 or FLAC if the night needs a file. No street price is quoted on this page. A professional ASIO browser is the 15 MB Capsule plus the PRO bridge — not a second installer named after a competitor.
Use this ASIO browser — pick the driver, ignore the clone forums
- Download Capsule onto a stick. At soundcheck, open the pro-audio page, pick ASIO and set a 128-sample buffer if the interface is stable.
- Keep Serato or VirtualDJ at home if that skin is the craft. The ASIO browser is the host that launches when those installers cannot.
- The MIDI-browser guide covers controllers; the DJ-browser guide covers the full category.
- The Capsule home page summarises the product in one line.
FAQ
Is Capsule an ASIO browser?
Yes. With Nightclub PRO, Capsule is a professional ASIO browser: native ASIO under 5 ms. /pro-audio.
Can Chrome become an ASIO browser with an extension?
No. Sandboxed Web Audio cannot reach ASIO. /news/alternative-to-google-chrome.
Does the ASIO browser need internet to mix?
No for local files, ASIO, MIDI, DVS, recording. Icecast needs a network. PRO: 7-day grace.
Is this a Serato clone?
No. ASIO is a driver path. Serato remains Serato. /news/alternative-to-serato.
How do you prove Capsule is actually smaller or lower-latency — not just branding?
Weigh the copied Capsule folder (about 15 MB stated; Demucs extra). Launch with no admin. For audio: Settings > Audio, buffer 128 at 48 kHz ≈ 2.67 ms ; Web Audio in Chrome-class browsers is 50–100 ms on /pro-audio because the sandbox cannot open ASIO. Komby Limited. No invented competitor installer sizes.
Do I still need Dashlane, 1Password or Bitwarden if I use Capsule?
Not for the local vault job. Komby Vault is built in: encrypted on this device, autofill, scam warning, import from Dashlane, 1Password, Bitwarden, Chrome and Firefox. It is not Dashlane’s cloud sync. Keep a cloud manager only if you require their SaaS. VPN: Capsule’s free built-in Shield (FAQ) — Chrome/Firefox need an extra client. Nightclub audio is a separate PRO licence. Komby Limited. /download.
What makes Capsule a motion-design browser — is that just marketing?
Check the chrome. Changelog 3.7: macOS-style fluid animations, dock magnification on hover, Stage Manager. 3.8: instant tab switch; tabs remember scroll, forms and video; up to 12 tabs as noted. 3.12: no previous-page flash, snappier start, live address bar. Chrome/Firefox do not ship that dock. Safari’s motion is the Apple OS, not a ~15 MB USB browser. No invented animation numbers. Komby Limited. /download.
Is Capsule the first portable browser in the world?
No. Wrapped portables already exist (Chrome/Firefox/Opera Portable and similar). Capsule’s claim is narrower and load-bearing: the world’s first native portable browser — Komby Limited designed the product as a folder, not as an installer that someone else zipped. Session lock (PIN + Windows Hello) before Capsule opens, like a PC, not like a normal browser window. /download.