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Welcome to Dive Gear Reviews, a comprehensive guide to scuba diving equipment. Scuba diving is an expensive pursuit, so looking up reviews for a particular article of equipment is a wise precaution before investing any hard-earned money in it. However, consumer reviews may or may not be written by an experienced diver, and magazine reviews could be suspect due to the advertising ties of the publication in question. Dive Gear Reviews provides cross-referenced reviews assembled by an expert, making it possible to see at a glance what multiple sources said about a particular piece of scuba equipment. If one magazine loved a scuba regulator or a dive computer, but the consumers hated it, that information will be found here.

Tusa RS-790 Scuba Regulator Review

Written by Dive Gear Reviews Editor. Comments Off on Tusa RS-790 Scuba Regulator Review Posted in: Between $251-$500, Scuba Regulators

The RS-790 is Tusa’s latest regulator, as well as the new top of the line in that department. As one might expect for such a reg, the RS-790 delivers solid performance under difficult conditions.

Like many companies, Tusa packages their regulators according to a code system that denotes both the first and second stages. In this case, the first stage is the R-700, a balanced diaphragm design with a dry pressure chamber and an exterior rib section. The latter features are specifically designed to improve performance under cold water conditions. The dry chamber also reduces the risk of corrosion for the reg’s internal moving parts. The first stage also comes equipped with two HP and four LP ports. Two of those LP ports are designated as “high flow” ports, delivering 15% more air than the normal LP port. This is a handy feature for divers with LP accessories that are a little hungrier for air.

The other half of the RS-790 is the S-90 second stage, a pneumatically balanced design. It comes with a venturi knob, but as an added plus that knob is labeled. No more guesswork for infrequent divers who can’t remember which way to turn their knob!

The Tusa RS-790 is 40% nitrox compatible.

Average Price: $450