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Whites Surf PI Dual Field
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Fisher Impulse


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Whites Surf PI Dual Field
Fisher Impulse
Feature comparison between Whites Surf PI Dual Field and Fisher Impulse
Options Whites Surf PI Dual Field Fisher Impulse
Detector Type PI Beach Detector PI Beach Detector
Price $900 $700
Manufactured in 2009 1994
Battery Type 8 AA 8 AA
Weight (Lbs.) 5.2
Operating frequency 5.333 PPS
Display None Yes
Backlight No
Target ID Audio Audio+LED Light
Tone ID Single
Search Modes
  • All Metal
  • All Metal N/M
Ability to change coils No
Ground balance Auto
Waterproof 100 feet 250 feet
Warranty 2 Years Lifetime
Number of Reviews graph 8
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graph 1
graph 1
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Avg. User Rating 4.55 4.33
Avg. Durability Rating 5.00 5.00
Avg. Ease of Use Rating 5.00 4.50
Avg. Depth Rating
Depth value
Depth value

Most helpful review for Whites Surf PI Dual Field

Never misses
I have used my pi detector about 4 times now. It will not miss anything metal. It goes very deep, found small shards of iron as deep as a foot down. One problem. My bodys sore from all the digging. Some kind of discrimination would be nice to skip over the junk but its still fun to dig. This baby finds it all, more than you will want.
Jay Hersey from Wilmington, NC

Thumbs up! 94
Read all reviews for Whites Surf PI Dual Field

Most helpful review for Fisher Impulse

Fisher impulse
This is my first Fisher detector. When I decided to get this detector it was because I heard it had good depth.

When my wife and I go out detecting, it's usually Friday till Sunday, and the ability of Fisher to work on 8 AA batteries for 6 months is outstanding, plus to change them is simple. Some detectors you have to plug in every night to get a hunt out of them.

It's a non-motion detector, which I like. I would not recommend this unit for a beginner water-hunter because unlike other detectors, you must have three arms to operate this unit.
One for your scoop, one for holding the detector, and the other for continually adjusting the detector "sensitivity" knob.

Using it at the beginning was hard and the threshold was annoying.
It took me some time to get used to it. It is the same in fresh and salt water. As soon as you take a step deeper, the threshold changes so you have to walk in a straight line parallel to the shore. It works in wet sand but you get better depth in the water.

I would suggest to the manufacturer that the sensitivity knob should either be made a bit tighter cause even a light touch will change the sensitivity. I had to take the knob off and wrap a rubber band around the pin.

Overall I have had very good luck with the Impulse.
I would estimate the depth on a medium size gold ring to be about 18 to 24 inches. I have dug some pretty deep holes.


If Fisher could make the threshold stable, with the same depth, performance and the same price tag, I 'll be the first in line.

I normally don't carry a measuring tape with me, but my non scientific guess would be, I could get a 12-14 inches on a US quarter when there is no wind and the water is calm using a 10 inch coil.
Vlad from CT

Thumbs up! 117
Read all reviews for Fisher Impulse