Alpine - Power Pack 180W Class D Bridgeable Multichannel Amplifier with High-Pass Filter - Black
Rating, 4.7 out of 5 with 603 reviews
4.7 (603 Reviews)- 36 Answered Questions
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Description
Features
Geek Squad® installation
is strongly recommended for this product. Please visit your local Best Buy store for details.
Handles up to 45W RMS (continuous) @ 4 ohms or 2 ohms
For powerful sound. Up to 90W continuous bridged.
12dB/Oct high-pass filter
Along with variable gain ensures flexible operation.
4 ohms bridged impedance
Conducts power evenly to keep the speaker at an appropriate level.
RCA and auto sensing speaker-level connectors
Enable simple installation.
What's Included
- Alpine Power Pack 180W Class D Bridgeable Multichannel Amplifier with High-Pass Filter
- Wiring harness with RCA connectors
- Owner's manual
Key Specs
- Voice Assistant Built-inNo
- Continuous Watts x Channel @ Ohms45W x 4 x 2
- Maximum Watts x Channel @ Ohms45W x 4 x 4
- Amplifier ClassD
- Number Of Channels4
- Bass BoostNone
- BridgeableYes
- Low-Pass CrossoverNone
- High-Pass CrossoverVariable
- Speaker-Level InputsYes
Compatibility
- Voice Assistant Built-inNo
General
- Product NamePower Pack 180W Class D Bridgeable Multichannel Amplifier with High-Pass Filter
- BrandAlpine
- Mounting Hardware IncludedYes
- Model NumberKTP-445U
- SeriesPower Pack
- ColorBlack
- Color CategoryBlack
Audio Power
- Continuous Watts x Channel @ Ohms45W x 4 x 2
- Maximum Watts x Channel @ Ohms45W x 4 x 4
- Watts Per Channel Maximum45 watts
- Amplifier ClassD
Audio
- Number Of Channels4
- Minimum Frequency Response20 hertz
- Maximum Frequency Response20 kilohertz
- Total Harmonic Distortion0.01 percent
- Signal-to-Noise Ratio (SNR)80 decibels
- Bass BoostNone
Features
- BridgeableYes
- Low-Pass CrossoverNone
- High-Pass CrossoverVariable
- MOSFET Power SupplyYes
- Bluetooth EnabledNo
- Remote Control IncludedNo
- MarineNo
- Fan CooledNo
Input
- Line-Level InputsYes
- Speaker-Level InputsYes
Output
- Preamp OutputsNo
Dimension
- Product Height1.5 inches
- Product Width2.63 inches
- Product Depth1.5 inches
- Product Weight3.3 pounds
Warranty
- Manufacturer's Warranty - Parts1 year
- Manufacturer's Warranty - Labor1 year
Other
- UPC793276011916
Customer rating
Rating 4.7 out of 5 stars with 603 reviews
(603 Reviews)Customer images
Features
Quality4 out of 5Value5 out of 5Ease of Use5 out of 5Rated 4 out of 5 stars
Great for my motorcycle
|Posted .Owned for 3 weeks when reviewed.Features
Quality4 out of 5Value5 out of 5Ease of Use5 out of 5Used this for my Victory Cross Country Touring. I upgraded the speakers and the factory amp struggled to keep up. I grabbed this amp and it pushed my upgraded speakers with no distortion. My speakers are currently the Kicker CS line. This amp offers powerful sound in a very small footprint.
Features
Quality4 out of 5Value5 out of 5Ease of Use5 out of 5I would recommend this to a friendRated 5 out of 5 stars
Great Amp
|Posted .My 2016 Chevy Colorado came equipped with MyLink. But Chevy used pitiful amplification from the head unit. 2nd row door speakers were of no effect. Adding this Kenwood amp and a set of 6.5 Infinity speakers to the 2nd row has brought the truck back from stereo purgatory. The Best Buy techs went the extra mile and helped tune the bass crossover and overall amp output to fit the cabin. THEIR HELP WAS INDISPENSABLE. This is the aftermarket answer for making the non Bose MyLink worth keeping.
I would recommend this to a friendFeatures
Quality5 out of 5Value4 out of 5Ease of Use5 out of 5Rated 5 out of 5 stars
Great Little Amp
|Posted .Owned for 2 weeks when reviewed.Features
Quality5 out of 5Value4 out of 5Ease of Use5 out of 5I was looking for an amp to replace a failed stock one in my BMW Z4 and initially bought a similar Sony product that failed within 2 days. Purchased this Alpine because it was in stock and couldn't be happier. Good sound levels, very little distortion, small and easy connections.
I would recommend this to a friendFeatures
Quality5 out of 5Value4 out of 5Ease of Use5 out of 5- Pros mentioned:Price, Sound quality
Rated 5 out of 5 stars
Awesome amp
|Posted .Pros mentioned:Price, Sound qualityI like the alpine amp is small and best sound and price
I would recommend this to a friend - Pros mentioned:Compact
Rated 5 out of 5 stars
Reliable and compact
|Posted .Pros mentioned:CompactReplaced my stock Bose speakers with Alpine R series and used this amp to power them. Provides a lot more power and at half the size. Could even fit behind your dash.
I would recommend this to a friend Features
Quality5 out of 5Value5 out of 5Ease of Use5 out of 5Rated 5 out of 5 stars
Amplifier
|Posted .Owned for 3 weeks when reviewed.Features
Quality5 out of 5Value5 out of 5Ease of Use5 out of 5Great amp and very small so u can put it under the dash and can hook it direct to your radio
I would recommend this to a friendFeatures
Quality5 out of 5Value5 out of 5Ease of Use5 out of 5Features
Quality5 out of 5Value5 out of 5Ease of Use5 out of 5Rated 5 out of 5 stars
Voice quality
|Posted .Owned for 1 month when reviewed.Features
Quality5 out of 5Value5 out of 5Ease of Use5 out of 5With this small amp I power my door speakers and they sound great, it makes my speakers play like they should have from factory
I would recommend this to a friendFeatures
Quality5 out of 5Value5 out of 5Ease of Use5 out of 5Features
Quality5 out of 5Value5 out of 5Ease of Use5 out of 5Rated 5 out of 5 stars
Excellent install
|Posted .Owned for 8 months when reviewed.Features
Quality5 out of 5Value5 out of 5Ease of Use5 out of 5Tech did a fabulous job installing the unit. I can even see any cables
I would recommend this to a friendFeatures
Quality5 out of 5Value5 out of 5Ease of Use5 out of 5
What experts are saying
Q: QuestionIf speakers (like JBL GX963) are rated for higher amps than the amp, will that result in more distortion at higher volumes? Would I be better off with a larger amp?
Asked by Ross.
- A:Answer This amp has real power I turned it down so as not to blow my kicker door speakers that can handle much more power.
Answered by TLee
Q: QuestionCan this amp be mounted in the fairing on a Harley Davidson?
Asked by Bdogg.
- A:Answer Yes it can. It is mounted in mine and it sounds great.
Answered by Jerry
Q: Questionhow easy would it be to jump this off my 600w amp and hook 2 6x9s to this amp? i have a bigger wire so plenty of power.
Asked by shawn.
- A:Answer Many people focus too much attention on the rear speakers. Rear speakers are for "rear fill". If your front speakers are able to create a good front stage and proper imaging AND be able to play clearly at high volume levels to balance out the subs, rear speakers are usually not necessary. Take out the 6X9s that reside in your rear deck. If you feel the need to put rear speakers later on, go with something small like a 5.25 in a coax.
Answered by TheOGofLogic
Q: QuestionIs this amp bridgeable making it a two channel amp with more power?
Asked by Hollie.
- A:Answer Yes you can bridge this amp to push 90w rms @ 2 ohms
Answered by ShawnS
Q: QuestionCan this amp be bridged at 2 ohms for 90 watts rms?
Asked by Anonymous.
- A:Answer Sure can. You don't quite see 90wrms out of each channel, but 75-80 is not unheard of. Works great to power a beefier pair of speakers without going into a full 4ch amp
Answered by StallationGuy
Q: QuestionIs this amp compatible with a 2013 ram 1500 with a factory radio
Asked by Hawaii.
- A:Answer I saw someone reviewed this amp on YouTube and said the ALPINE KTP-445U the U stands for universal and that will allow connections with factory amps..I'm lead to believe the A is for Alpine units. Cheers!
Answered by Danny
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