Garrett ACE 300 vs ACE 400: The Gap Is Smaller Than the Price

Iron audio and a higher frequency. Iron audio is the more useful of the two and it is worth understanding properly: a discriminated target normally goes silent, so you learn nothing about it. Iron audio lets the machine grunt at iron instead, which tells you the difference between a nail and a bottle cap sitting next to a coin, and on old sites that is a genuine skill multiplier.

The higher frequency is narrower in effect. Higher frequencies respond better to small, low-conductive targets such as thin gold and small jewellery, and slightly worse to large silver, and they get noisier in mineralised ground. It is a preference rather than an upgrade. If you hunt clad and silver coins in parks, you will not notice which machine you are holding. The Garrett iron audio settings chart covers how to actually use the feature you would be paying for.

Same maker, same platform, two listings that publish almost identical things. That similarity is the finding.

Eight rows and the two machines are identical on five of them. This is what a small upgrade looks like when it is priced as a large one.

You hunt parks, schools, yards and sports fields for coins and jewellery, which describes most people buying their first proper detector. You get the same numeric target ID, the same pinpointing and the same interference control, and the money you keep buys the accessory that will change your results far more than iron audio would.

Choose it too if you are not yet certain the hobby will stick. A cheaper machine that gets used is worth more than a dearer one that does not, and the ACE 300 resells easily because it is one of the most common detectors in the United States. Start with ACE 300 settings by site type and its target ID chart, and expect your own ground to shift the numbers.

You hunt old sites full of iron, where iron audio earns its money every session. On a homestead or an old farm field the ability to hear what you are rejecting is not a luxury, it is how you avoid walking past a coin lying beside a nail. That is the one scenario where the price difference is clearly justified.

Choose it too if you specifically hunt small gold jewellery, where the higher frequency helps. Otherwise, be honest about which of those two descriptions fits your ground. The ACE 400 target ID chart and its settings page cover the machine, and if you have already decided to spend, read the ACE 400 against the Apex first, because that comparison is far less flattering to the 400.

Below these two, Garrett ACE 200 at $149.99 publishes the same 0 to 99 target ID scale with a 6.5 by 9 waterproof coil and a three year warranty, and is the cheapest sensible way into the hobby from Garrett. Above them, Garrett ACE Apex at $384.99 adds genuine multi-frequency, Z-Lynk wireless and a lithium battery, which is a real technology step rather than a feature step.

That shape is worth seeing whole before you buy anywhere in it: the jump from the 300 to the 400 is small, and the jump from the 400 to the Apex is large for similar money. The ACE coil compatibility chart shows what fits across the line, and the beginner roundup sets all of them against the rest of the catalog.