The DragonFly Red should be low-noise enough, but I would not recommend using the S8 series out of a 2-volt amp without an independently adjustable volume control. One glitchy burst of static at 100% with 112 dB/mW sensitivity IEMs is like having a pistol go off near your ear. If you insist on using the DFR, I'd suggest pairing it with an IEMatch. Don't end up like this guy:
https://www.reddit.com/r/headphones/comments/dfkv7j/psa_ultra_sensitive_iems_are_dangerous/
I'd recommend either the ES100 or BTR3 instead depending on your needs regarding build quality and feature set. The former feature a better EQ implementation and a volume limiter, while the latter has better build quality, a more durable USB-C port for wired use, and AptX LL support.