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About Aeris AT 600 ION LT Regulator, Black

The AT 600 ION LT is the latest iteration of the flagship Aeris ION Regulator specifically designed for the traveling diver. The compact ION has been reduced in weigh by removing the swivel and by adding an ultra-flexible braided MaxFlex hose. Paired with the ultra-compact AT 600; a brand new over-balance diaphragm first stage weighing in at just 24 oz (680.4 g).

The AT 600 is a High Performance First Stage made from forged chrome plated marine grade brass, has a diaphragm membrane that transmits the pressure changes to the internal mechanism eliminating the need for the surrounding water to enter the intricate mechanism. The benefit of this type of first stage design is that none of the internal parts are exposed to contaminants such as salt, sand, chlorine or pool acids. These environmental contaminants cause corrosion and mineral deposits to form on the internal mechanism deteriorating regulator performance. The standard Diaphragm Regulator does allow water into the mainspring chamber so that the diaphragm can perform this transmission of pressure changes. The first stage has 4 Low Pressure Ports (LP) and two High Pressure Ports (HP) and is Nitrox compatible to 40% out of the box.

The pneumatically balanced demand valve of the Ion Second Stage along with a highly responsive design allows this regulator to provide a high volume of airflow with even the slightest inhalation effort, making it seem nearly effortless to breathe at any depth. All in a second stage barely wider than the mouthpiece. The ION LT means business as it comes equipped for any type of dive conditions, cold or warm. Following the rules of the sea, or should we say the rules of the C: Compact - Comfortable - Customizable; the ION LT is a diver's dream.

The ION LT is Aeris' smallest and most streamlined second stage ever with an outer ring diameter of only 2.3" (5.8 cm) and 5.4 oz (153 g) weight. The ION LT's second stage is made from an ABS/Polycarbonate composite blend of materials making the ION LT both extremely rugged and lightweight, reducing jaw fatigue on extended dives. The extremely lightweight cover ring is machined from a solid piece of aircraft aluminum, and then hard anodized to prevent corrosion.

A common objection to typical adjustable second stages is that divers can't imagine themselves twisting and turning a knob as they descend and ascend through the depths. If inhalation resistance is set near zero at depth, your ascent would require you too manually increase resistance as ambient water pressure is reduced to prevent free-flow. The ION LT features a pneumatically balanced valve that maintains a preferred breathing resistance throughout the dive. Set it once and the ION LT automatically adjusts to make breathing as easy at 100' (30 meters) as it is at 30' (10 meters). The ION LT features reduced weight by removing the previous swivel and by adding our ultra-flexible braided 30" (76.2 cm) MaxFlex hose. The MaxFlex hose is a lightweight, flexible, braided hose designed to outperform and outlive traditional rubber hoses.

Aeris regulators are exclusively designed using the latest 3-D computer modeling techniques. This allows Aeris the ability to model and test performance while still in the early stages of development. The ION LT's unique deflector vane and housing design diverts airflow from the valve directly to the mouthpiece, producing smooth venturi-assisted inhalation. Adding to the ION LT's rugged durability, an oversized integrated purge button is utilized to eliminate the possibility of free-flow caused by trapped sand. To further reduce jaw fatigue, the ION LT features a new patented orthodontic mouthpiece with high density bite tabs designed to accommodate the natural overbite of the human jaw. The ION LT is classified as being suitable for use with nitrox breathing gas mixtures containing up to 40% oxygen by volume without the need for special preparation, cleaning or component parts. The regulator comes with a Comprehensive Owner's Manual and is covered by a 24 month limited warranty.

Warranty Information

This product has a limited warranty of 24 months.
(800) 647-0605 Ext# 764

Aeris AT 600 ION LT Regulator, Black Features

  • Aeris AT 600 ION LT Regulator:
  • Specifically Designed for the Traveling Diver
  • Hose: 30" (76.2 cm) MaxFlex Braided Hose
  • Hose: Lightweight, Flexible, Out-Perform and Outlive Traditional Rubber Hoses
  • Total Weight: 29.4oz (833.4g)
  • Owners Manual
  • 2 Year Limited Warranty
  • First Stage: Aeris AT 600
  • Over-Balanced Diaphragm First Stage
  • 4 LP Ports
  • 1 HP Ports
  • Marine Grade Chromed Brass Material
  • Ultra Compact Design
  • Lightweight 24oz (680.4g)
  • Nitrox Ready Up to 40% Out-of-the-Box
  • Second Stage: Aeris ION LT
  • Pneumatically Balanced Second Stage
  • Virtually No Breathing Effort
  • Patented Dynamic Adjustment Automatically Maintains Inhalation Effort
  • Adjustable Venturi Switch for Dive/Pre-Dive Adjustment
  • Patented Orthodontic Mouthpiece with High Density Bite Tabs
  • ABS/Polycarbonate Composite Blend Construction
  • Aircraft Anodized Aluminum Cover Ring
  • Lightweight: 5.4 oz (153 g)
  • Compact: 2.3" (5.8 cm) Diameter

Aeris AT 600 ION LT Regulator, Black Specifications

1'st Stage Type
Balanced Diaphragm
LP Ports
HP Ports
Adjustable 2'nd Stage
NITROX Compatible
Yes, Up To 40%
2'nd Stage Type
Pneumatically Balanced
1'st Stage: Marine Grade Chromed Brass, 2'nd Stage: Abs/Polycarbonate Composite Blend And Anodized Aluminum
Hose Thread
Hose Length
30" (76.2cm)
Total Weight
29.4oz (833.4g)
Weight [with packaging]
2.75 lb
Mfr #

AT 600 ION LT Regulator, Black Customer Reviews

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Aeris AT 600 ION LT Regulator, Black

(based on 2 reviews)

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Failed the first time out. Free flow uncontrollable

By Rum runner

from Cincinnati OH

About Me Advanced



    • Causes Jaw Fatigue
    • Poor Design

    Best Uses

      Comments about Aeris AT 600 ION LT Regulator, Black:

      This unit free flows uncontrollably. The only way to stop is to turn the tank off. The customer service with Aeris isn't very good and we have to pay the shipping if we want it repaired. Spend a few more dollars and buy a better unit.

      • Diving Type:
      • Open Water Diving
      • Was this a gift?:
      • No

      Comment on this review

      (1 of 1 customers found this review helpful)


      Compact Travel reg

      By RodeoNemo

      from San Jose, CA

      About Me Advanced

      See all my reviews


      • Adjustable
      • Comfortable
      • Nitrox Compatible


        Best Uses

          Comments about Aeris AT 600 ION LT Regulator, Black:

          I got the DIN version and it works well. Venturi is effective.
          Surprisingly small though I've also seen aqualung having similarly small 2nd stage and a smaller 1st stage.

          The effort of breathing with the valve set to "-" all the way requires a bit of effort. When set to "+" all the way, it requires normal effort of breathing. My baseline is APEKS TX40, which is a great regulator I've used for 14 yrs.

          By the way it works in every direction including upside down. I've tried it and it works just fine. It does need a bit of effort.

          • Diving Type:
          • Cave Diving, Drift Diving, Night Diving, Open Water Diving, Rescue Diving, Wreck Diving

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          Questions & Answers Powered by TurnTo®

          Questions about this item:

          DANIEL K  Is this Yoke style 1st stage?
          Andrew L  Yes it is!
          DANIEL K  Thank you!
          DANIEL K  Is this Yoke style 1st stage?
          Andrew L  Yes it is!
          DANIEL K  Thank you!
          DANIEL K  Is this Yoke style 1st stage?
          Andrew L  Yes it is!
          DANIEL K  Thank you!
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