2-3 Days ALPINE KTA-450

Alpine KTA-450 4-channel Amplifier (Head Unit Power Pack)

The KTA-450 is a very compact 4/2-Channel amplifier, that is mainly designed to be power-stacked with the iLX-W650BT, but can also be used stand-alone in any universal configuration.

Featuring Alpine’s Dynamic Peak Power (DPP) technology, the KTA-450 can add bursts of 100 Watts RMS power when needed.

In combination with the iLX-W650BT, the KTA-450 won the 2019 Innovations Award at CES Show 2019. If you plan to buy an iLX-W650BT, this tiny amplifier will make a significant improvement to your system.

Features & Details


  • Terminal Layout: One side
  • Small footprint for easy installation
  • Connector terminal (for speaker and power cables)


  • Amplifier Type: Class-D (Digital)
  • Channel Design: 4/2 Channel (3 Channel configuration not possible)
  • DIP Switches
  • RCA and Speaker Level Inputs
  • Crossover: Adjustable High-Pass Filter (HPF)
  • Gain Control: Front / Rear Adjustable
  • Included Power-Stack bracket and screws for back-mount to iLX-W650BT
  • Included cable harness



RMS Power Ratings

  • Per Channel into 2 Ohms, 14.4V (≤1%THD+N): 4 x 45W
  • Per Channel into 4 Ohms, 14.4V (≤1%THD+N): 4 x 50W
  • Bridged, 4 Ohms, 14.4V: 2 x 100W

DPP (Dynamic Peak Power) Power Ratings

  • Per Channel into 2 Ohms, 14.4V (≤1%THD+N): 4 x 100W
  • Per Channel into 4 Ohms, 14.4V (≤1%THD+N): 4 x 100W

Sound Tuning

  • Crossover: Selectable HPF: 60, 80, 120Hz (-12dB/oct) on front and rear channels


  • Power Requirements: 14.4 V.DC (9 - 16 V allowable)
  • Frequency Response (+0/ -3dB: 1W into 4 Ohms): 15Hz – 50kHz
  • THD+N (@ 10W into 4 Ohms): <0.2%
  • S/N Ratio: AES-17, Ref: 1W into 4 Ohms: >85dB
  • Weight: 0.6kg


  • Width:  89mm
  • Height: 36mm (39mm with attached universal bracket)
  • Length: 181mm (198mm with attached universal bracket)
  • Brand: ALPINE
  • Product Code: KTA-450
  • Availability: 2-3 Days
  • 219.00€
  • Ex Tax: 176.61€

Tags: Amplifier