Class A3 Aluminum Alloy Tuning Forks

Manufactured with the finest corrosion and rust resistant aerospace-grade, non-magnetic aluminum alloy, of 3/8” x 1″ (1cm x 2.5cm) bar.  Sold exclusively to distributors, non-tarnishing Riverbank Class A3 tuning forks require no plating, offer optimum size and proportion, and with proper care will perform flawlessly for a lifetime.

Class A3 Riverbank aluminum tuning forks are produced from 30 to 6000 Hz and offer uncommonly long duration of audible time along with constant frequency over time.

Weighted vs. Unweighted                 

Specific frequency is a product of length, width, thickness and elasticity. Weighting the fork increases the mass at the ends of the prongs and lowers the frequency in a shorter and easier to use length, transferring more energy to the handle.

To maximize performance including ring time, we recommend that tuning forks at or below 256 Hz should be weighted, but tuning forks above 256 Hz should be furnished without weights.

Riverbank Laboratories manufactures tuning forks precisely to your desired frequency specifications, tuned to within .5% at 20 degrees Celsius.  As temperature affects frequency, we caution you not to be fooled by misleading claims of more precise tuning that typically are accompanied with a higher cost but too often disappoint.

Purchase individually or in popular Sets:

Set of 6 for Medicine:
C128, C256, C512, C1024, C2048, C4096 Hz

Set of 8 for Education:
C256, D288, E320, F341.3, G384, A426.7, B480, C512 Hz

Solfeggio Set of 9 for Alternative Medicine:
174, 285, 396, 417, 528, 639, 741, 852, 963 Hz

Class A2 Aluminum Alloy Tuning Forks

Class A2 Riverbank Laboratories tuning forks are made of ½” x 1 ¼” (1.3cm x 3.2cm) aluminum alloy bar that is non-magnetic, will not rust, corrode or tarnish, and require no plating.  Sold exclusively to distributors, all of our Class A2 turning forks are furnished with turned smooth aluminum handles for easy handling, providing a lifetime of comfortable usage.

Long favorites of the medical industry for their consistent performance and durability, they are manufactured from 128 to 4096 Hz.  Frequencies of 165 Hz and 256 Hz can be provided with a single fork that is calibrated with removable weights. Tuning forks from 256 Hz to 4096 Hz are furnished without weights.