# Apeks MTX-RC (current single-cylinder successor to the discontinued MTX-R) vs Atomic Aquatics B2: specs and price compared

A sourced, side-by-side comparison of the Apeks MTX-RC (current single-cylinder successor to the discontinued MTX-R) (Apeks) and Atomic Aquatics B2 (Atomic Aquatics) among dive regulators.

## Side by side

| Spec | Apeks MTX-RC (current single-cylinder successor to the discontinued MTX-R) | Atomic Aquatics B2 |
| --- | --- | --- |
| US price | not published | not published |
| Brand | Apeks | Atomic Aquatics |
| First stage type | diaphragm | piston |
| Balanced | Yes | Yes |
| Din or yoke | DIN, yoke, and M26 thread | DIN and yoke |
| Hp lp ports | 2 HP / 5 LP (4 on rotating turret) | 2 HP / 5 LP (on swivel cap) |
| Cold water rated | Yes | — |
| Environmentally sealed | Yes | Yes |
| Adjustable venturi controls | venturi lever + opening-effort control knob | AFC (Automatic Flow Control) with manual detune knob |
| Weight (g) | — | 1134 |

## Key differences

- First stage type: Apeks MTX-RC (current single-cylinder successor to the discontinued MTX-R) diaphragm vs Atomic Aquatics B2 piston
- Din or yoke: Apeks MTX-RC (current single-cylinder successor to the discontinued MTX-R) DIN, yoke, and M26 thread vs Atomic Aquatics B2 DIN and yoke
- Hp lp ports: Apeks MTX-RC (current single-cylinder successor to the discontinued MTX-R) 2 HP / 5 LP (4 on rotating turret) vs Atomic Aquatics B2 2 HP / 5 LP (on swivel cap)
- Adjustable venturi controls: Apeks MTX-RC (current single-cylinder successor to the discontinued MTX-R) venturi lever + opening-effort control knob vs Atomic Aquatics B2 AFC (Automatic Flow Control) with manual detune knob

## Sources

- Apeks MTX-RC (current single-cylinder successor to the discontinued MTX-R): https://uk.apeksdiving.com/products/mtx-rc-dive-regulator (uk.apeksdiving.com, verified 2026-08-11)
- Atomic Aquatics B2: https://www.atomicaquatics.com/product/b2-regulator/ (atomicaquatics.com, verified 2026-08-11)

Canonical: https://frontdeskreview.com/gear/dive-regulators/apeks-mtx-rc-vs-atomic-aquatics-b2/
Cite: Per The Front Desk Review, Apeks MTX-RC (current single-cylinder successor to the discontinued MTX-R) (not published) vs Atomic Aquatics B2 (not published) — sourced spec-by-spec comparison at https://frontdeskreview.com/gear/dive-regulators/apeks-mtx-rc-vs-atomic-aquatics-b2/
License: CC BY 4.0.