A new audiophile versatility

The new HD 660 S lets you enjoy sophisticated audiophile sound in even more listening situations. The successor of the legendary HD 650 excels with the improved performance of its new transducer design. Thanks to its lower impedance, it delivers reference-class sound also when connected to hi-res mobile players, thus offering much greater versatility. The HD 660 S is an elegantly designed piece of high-quality engineering that indulges the demanding listener with aural precision and great wearing comfort.

Sound for the passionate music enthusiast

Made for the demanding listener, the HD 660 S surpasses the exceptional performance of its predecessor, the legendary HD 650. With a crisp bass, excellent mid-frequency response, and a gentle, pleasantly natural treble, the HD 660 S has an expressiveness that immerses you in every emotion and nuance of music. Still, it always stays exceptionally accurate and transparent.

The look of sophistication

The pure and effortless sound of the HD 660 S is reflected in its new matte black and anthracite design. It is a high-end aesthetic that embraces both timeless elegance and contemporary style – uncompromising in its craftsmanship, like everything about the HD 660 S.

SIMPLIFIED AUDIO, RE-ENGINEERED

We redesigned Element II to maximize your desktop audio experience. Element II packs the performance you expect from JDS Labs into a precision machined aluminum chassis, with an equally impressive 32/384k DAC, and button activated preamp RCA outputs. Enjoy the comfortable knob and seamless transitions between your powered speakers and headphones!

RELAY MUTING

Designed for desktop listening, Element II's full relay muting eliminates pops and thumps during startup through both its headphone and preamp outputs.

MEMS OSCILLATOR

Element II's USB DAC is clocked by an SiTime MEMS oscillator with ±10ppm frequency stability, delivering pristine jitter.

USB AUDIO CLASS 2

Element II supports up to 32/384kHz PCM over a custom XMOS XU208 based UAC2 engine. While we claim no measurable superiority of high sampling rates, UAC2 and ASIO support satisfy your pursuit of bitperfect listening.

AC TRANSFORMER

Element II's amplifier and DAC are 100% powered by its external AC transformer, with 12 regulators ensuring consistent rail voltage and super low ripple.

PREAMP OUTPUTS

Element II provides preamp RCA outputs, so that you can control volume of your powered speakers.

OUTPUT SELECTION

The Mode button allows you to toggle between headphones and powered speakers. No need to disconnect cables!

ULTRA HIGH POWER

With +/-15VDC rails and continuous max power of 1.3W, Element II drives all headphones on the market to extroardinary levels, from balanced armatures to planar magnetics.

TOP PERFORMANCE

Element II is our most advanced amp+DAC to date, achieving top performance from its 4-layer, star grounded layout.

DUAL GAIN

Low gain of 1.0x is well suited to driving efficient IEMs, while High gain easily powers demanding full size sets.