What Is the AK4628VQ?
The AK4628VQ is a 24-bit digital-to-analog converter (DAC) chip manufactured by Asahi Kasei Microdevices (AKM). It is part of AKM's line of audio converters designed for consumer and professional audio applications, including mixing consoles, amplifiers, and KTV systems.
Unlike flagship DACs such as the AK4490, the AK4628VQ is a workhorse component: it delivers solid audio performance at a cost that suits mass-produced audio gear. That makes it a common sight in mid-range pro audio equipment and karaoke machines.
Key Specifications
> Note: Always verify exact specifications against the official AKM datasheet for your revision. The points below are general characteristics of the AK4628VQ family, not a substitute for the datasheet.
- Resolution: 24-bit
- Channels: Stereo (2-channel) DAC
- Interface: Serial audio interface (I2S-style)
- Package: 32-pin QFP (the "VQ" suffix indicates the package type)
- Supply: Single 5V or 3.3V supply (check datasheet)
- Typical THD+N and SNR: Suitable for consumer and prosumer audio, not flagship-grade
Because the AK4628VQ is a mature part, it is widely available and well-documented, which is helpful for repair technicians and integrators maintaining older equipment.
Where the AK4628VQ Is Used
The AK4628VQ appears in a range of audio products where reliable, cost-effective digital-to-analog conversion is needed:
- KTV and karaoke systems: Mixing and playback units often use AKM DACs for vocal and music conversion.
- Pro audio mixers and DSP units: Mid-range digital mixers may use the AK4628VQ for monitor or auxiliary outputs.
- AV receivers and amplifiers: Some home and commercial amplifiers use it for stereo playback.
- DJ and installation audio gear: Fixed-install audio processors and zone mixers.
If you are sourcing used KTV equipment or building a venue audio system, understanding which DAC a device uses helps you judge its audio quality and repairability. Acoustrade's used KTV equipment and pro audio amplifiers listings often include gear built around AKM converters like the AK4628VQ.
AK4628VQ vs Other AKM DACs
| Chip | Resolution | Typical Use | Notes |
|------|------------|-------------|-------|
| AK4628VQ | 24-bit | KTV, mixers, AV gear | Mature, cost-effective |
| AK4490 | 32-bit | Hi-Fi DACs, premium gear | Flagship-grade, higher cost |
| AK4384 | 24-bit | Consumer audio | Similar class to AK4628VQ |
The AK4628VQ is not a "hi-fi flagship" chip, but it is more than adequate for KTV vocals, background music, and general PA use. In a venue system, the DAC is only one link in the chain — speakers, amplifiers, and room acoustics matter far more.
Buying Used Gear with AK4628VQ
When evaluating used pro audio or KTV equipment:
- Check the service manual to confirm the DAC and other key components.
- Test audio output at low and high volumes for distortion or channel imbalance.
- Ask about repair history — a failed DAC is rare but not impossible.
- Consider parts availability — the AK4628VQ is still findable, but always confirm before committing to a large install.
Acoustrade tests used equipment before sale and can help you match components to your venue's needs. Browse used mixers, used speakers, and used microphones to build a complete system.
FAQ
Is the AK4628VQ a good DAC?
Yes, for its class. It is a solid 24-bit converter suitable for KTV, mixing, and general audio playback. It is not a flagship hi-fi chip, but it performs well in the applications it was designed for.
What does the "VQ" in AK4628VQ mean?
The "VQ" suffix typically denotes the package type (a 32-pin QFP). Always confirm the exact package in the AKM datasheet for your specific part number.
Can I replace an AK4628VQ with another DAC?
Not directly. DAC chips are not pin-compatible across models. Replacement requires matching the package, pinout, and interface. Consult a qualified technician before attempting a swap.
Where can I find equipment that uses the AK4628VQ?
KTV systems, mid-range mixers, and some AV amplifiers commonly use this chip. Acoustrade's used equipment catalog includes KTV and pro audio gear that may use AKM converters — check listings or contact us for component details.
