This flagship bundle pairs the SR-009S electrostatic earspeakers with the SRM-700T hybrid vacuum tube driver for an uncompromising high-fidelity listening experience. Ultra-thin diaphragms, a push-pull open-back design, and genuine leather earpads combine with Class-A tube-driven amplification to deliver breathtaking clarity, warmth, and an expansive soundstage for discerning audiophiles.