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Alpine® 4-Channel Power Pack Amplifier with PowerStack Capability
Alpine® 4-Channel Power Pack Amplifier with PowerStack Capability 0
Alpine® 4-Channel Power Pack Amplifier with PowerStack Capability 1
Alpine® 4-Channel Power Pack Amplifier with PowerStack Capability 2

Alpine® 4-Channel Power Pack Amplifier with PowerStack Capability

Model #: KTA-450
At a Glance
The next generation of Power Pack is here! The compact KTA-450 Power Pack Amplifier utilizes Alpine’s exclusive DPP technology for a big power boost in a small space.
Available in Store Only

Get to know this product.

  • Compact size, measuring just 7” W x 3.5” H x 1.25” D
  • Class D amplifier circuit
  • Dynamic Peak Power (DPP) technology doubles the power during dynamic musical passages
  • PowerStacking bracket included for mounting to the iLX-W650 7” Mech-less AV Receiver (sold separately)
  • The KTA-450 used with the iLX-W650 is a 2019 CES Innovation Awards Winner
  • DPP Power Rating: 100W DPP x 4 (2/4 Ohm, 14.4V, =1% THD+N)
  • CTA-2006 Power Rating: 45W RMS x 4 (2/4 Ohm, 14.4V, =1% THD+N)
  • >82dB S/N (ref. 1W into 4 Ohm)

Award-Winning Powerstack Compatibility

Exclusive Amplifier Technology, Dynamic Peak Power (DPP)

The KTA-450 can mount behind select Alpine 2-DIN mech-less head units, like the iLX-W650, using the included bracket. The KTA-450’s recessed harness receptacle allows the wiring to fold between it and the head unit so both products fit in a standard 2-DIN space. This PowerStack design is a 2019 CES Innovation Awards winner and makes the duo one of the most powerful 2-DIN radios available.

The KTA-450 features Alpine’s exclusive Dynamic Peak Power (DPP). DPP intelligently adjusts the gain to adapt to musical needs. DPP prevents the KTA-450 from clipping by supplying up to double the power for sudden, dynamic sounds. DPP ensures music sounds the way it should at high volumes and boosts the KTA-450 to 400 watts DPP, doubling its power without increasing its size.

Compact Size For Hidden Installation Applications

The KTA-450 measures just 7” W x 3.5” H x 1.25” D. For vehicles that do not have the space for a traditional amplifier, the KTA-450’s small size allows it to be tucked away in hidden areas such as in the glove box or behind the radio. It could even be used in a motorcycle’s saddlebag or on a boat.

Simple Installation For Use With Any Radio

Thanks to the efficient power needs of the DPP technology, the KTA-450 does not require a new power supply wire at the battery, so installation is fast using the supplied radio power wires. In addition, the KTA-450 uses a 22-pin power harness with a recessed design on one side, so the cables can be tucked-in for a cleaner, less-bulky installation.

Useful Documents

Misc. Specs

Depth (in.)1.25
Width (in.)7
Height (in.)3.5
Amplifier ClassClass D
Bluetooth CapableNo
Amplifier Channels4
Impedance2 - 4 Ohms
RMS Power Handling (Watts)100
Water ResistantYes
Digital InputNo
Shallow MountNo
Speaker Level InputYes
Number Of Outputs1
Minimum Impedance Unbridged2 Ohm
Number Of Inputs1
Product Weight (lbs.)1.3
WarningProposition 65 Warning for California Residents