Product News
K4-450 Digital Amplifier Gets a Fresh Internal Look
: 255
: 2025-11-27 15:47:43
K4-450 Internal Refresh
All changes are cosmetic only: color finishes and surface coatings have been updated while the circuit topology, key component types and all performance data remain identical. The result is a sleek “all-black interior” that looks cleaner and more modern.PCB – now in blue
Superior moisture & chemical resistance: the blue mask gives extra protection in humid or industrial environments, ideal for outdoor deployments.
High contrast: blue solder-mask with white silk-screen makes component legends easier to read during assembly and service.
| Refresh Internal | Previous Interior |
 |
 |
 |
 |
K4-450 – Always Sinbosen’s hot seller
8 Ω stereo power (RMS): 450 W × 4 CH4 Ω stereo power (RMS): 700 W × 4 CH
Perfect for driving line-array HF units and full-range loudspeaker.
Stock locations & fast tax-free shipping
Large inventories in Mexico, Europe and USA. Local dispatch, no import duty, 3-5 day delivery.NOTE:The K4-450 stored in overseas warehouses is still an old version internally, while the one shipped in China is the new version. But the performance is the same
Recommended match – XT-05 coaxial 5" speaker
One K4-450 powers four XT-05 speaker. XT-05 stock will arrive in our European warehouse soon—sample bookings are now open.
Contact us:
sales2@sinbosen.comWhatsapp:https://api.whatsapp.com/send?l=en&phnoe=8616676738225
Website:https://www.sinbosenaudio.com/