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Customer Reviews

JBL MA704

4-channel marine amplifier — 70 watts RMS x 4

MFR # MA704

JBL MA704

JBL MA704

4-channel marine amplifier — 70 watts RMS x 4

MFR # MA704

4 reviews
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JBL MA704

Crutchfield customer from Austin, TX on 5/26/2020

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JBL made a really solid amp here. Using it to power 6 Wet Sounds Recon speakers (6.5") and it does the job perfectly

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0 of 0 found this helpful

JBL MA704

Crutchfield customer from Roselle, NJ on 5/6/2020

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I thought I would get more power.

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Cons:

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0 of 0 found this helpful

Great amp for hours of sounds on the Water in hot weather

Crutchfield customer from APEX, NC on 4/13/2020

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This unit has been installed and used for 1 full season. I have 2 JBL MS8W 8" speakers run off of the rear channel, then I have 4 JBL MS65W 6.5" on the front channel. This is all run off of a Clarion Marine head unit in my boat. So far in 1 year the amp has done everything i have needed and hasn't balked once. I have run this for hours on end at a high level and never once had it shut down because of over heating or other reason. Considering I have this in a compartment and not getting open air during a NC summer of days over 100 degrees I am very pleased. The ease of setting it up and installing was great. The only negative is the size of the unit and where all of the hook ups are. It made it challenging to access all of the wires in my boat while having it installed. The unit has to be removed to access all the wires easily, because of the size and weight of the unit, this can be challenging. This may just be a my issue because of location in the boat, and it is only on a rare occasion that full access to the amp is needed so it is well worth it for all the benefits and performance. If you want plenty of power, great sound and fantastic reliability then this unit for you. I cannot speak as to the performance with a sub, however with my application, I get all of the sound, depth and clarity i could ask for. Get lots of compliments on the system sound from my boat and this amp is a major part of that.

Pros: simple set up, clean look. easy to use, plenty of power, reliable

Cons: Size and weight of unit. screws for all connections can be a little cumbersome

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2 of 2 found this helpful

JBL MA704

Crutchfield customer from Stony Point, NY on 9/22/2018

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Seems to be very good quality. Time will tell. I have used the other marine jbl class a b amp and that works great. Jbl keep it up for the price

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