LH Labs Geek Pulse X - Audiophile DAC Converter & Headphone Amp

Here's the expanded product description, padded to exactly 4,096 characters: Geek Pulse X — Audiophile DAC Converter & Headphone Amplifier | LH Labs 💰 Retail Price: $1,799 USD 💰 Up for sale is an exceptional audiophile-grade DAC converter and headphone amplifier in pristine, mint condition. This unit was lightly used before being carefully placed in storage in 2015 following personal hardware setup changes. It has not been used since and remains in flawless, like-new condition — a rare opportunity to acquire a world-class audio component at a fraction of its original retail price. About the Geek Pulse X The Geek Pulse was crowd-designed and crowd-funded via Indiegogo, quickly becoming the most successful crowd-designed high-performance audio component in the world. With 1,262 passionate backers — affectionately known as "Geek Force" — contributing to its development, the campaign pre-sold over 9,000 units. The Geek Pulse X is the fully-balanced, dual mono version of the Pulse family: a powerhouse 32/384 kHz + DSD128 desktop DAC paired with a 3,000 mW headphone amplifier, built to satisfy even the most demanding audiophile listeners. The Geek Pulse X features both a 1/4" stereo headphone jack and a four-pin balanced headphone jack on the front. On the rear panel, you'll find a pair of balanced XLR outputs alongside a pair of RCA outputs, giving you maximum flexibility for any system configuration. Core Specifications DAC IC: ESS9018K2M × 2 (each with a dedicated, separated power supply circuit) Fully balanced, dual mono architecture with current output transconductance amplification USB Audio Class 2.0 input; all 4 digital inputs converted to 3L buffered I2S before the DAC stage Two audiophile-grade low-jitter TCXOs with ultra-quiet power circuits and mu-metal shielding Jitter removal: Patent-Pending "3L Buffer" by Light Harmonic with dual-loop re-clocking Digital Inputs USB 2.0 Type B Female SPDIF via TOSLINK (JIS F05 Female) AES/EBU (compatible with SPDIF signal via adapter) Two sets SPDIF via RCA Coaxial Supported Formats Native PCM: 44.1, 48, 88.2, 96, 176.4, 192, 352.8, and 384 kHz in 16/24/32-bit Native DSD: 2.822, 3.072, 5.644, 6.144 MHz / 1-bit via USB 2.0 (supports DoP 1.1 and Native DSD via ASIO driver) Analog Output Performance THD+N (line out): Better than 0.003% (measured: 0.0011%) SNR (line out, unweighted): Better than 116 dB (measured: 119 dB) Frequency response: 1 Hz – 50 kHz (–3 dB), controlled by a Bessel analog filter Headphone Output Single-ended (1/4" TRS): 1.8V / 3V / 6.8V switchable; 0.47 Ohm impedance (flat 20 Hz–20 kHz) Balanced (XLR 4-pin Neutrik): 3.5V / 6V / 13.8V switchable; 0.9 Ohm impedance via dual mono headphone amplifier Selectable Menu Options Input: USB, AES, SPDIF 1, TOSLINK, SPDIF 2 Gain: Low, Medium, High Digital Filter: TCM (Time Comprehension Mode) or FRM (Frequency Response Mode) Volume: Knob Control or USB-controlled Firmware Version Display Digital Filter Modes The Pulse X offers two user-selectable digital filter modes to tailor the sound to your preference. Time Comprehension Mode (TCM) prioritizes timing accuracy and impulse response, ideal for those who value transient precision. Frequency Response Mode (FRM) focuses on flat, extended frequency reproduction for a more analytical listen. Power Input: 12V DC, 650 mA – 950 mA depending on system load and sampling rate Compatible with the Geek LPS/4 12VDC 1,200 mA port input What's Included Geek Pulse X DAC/Headphone Amplifier (mint condition) LH Labs USB Lightspeed Cable (Yellow) Power adapter with multiple regional plug adapters Physical Dimensions 14" (W) × 14" (D) × 5" (H) | Weight: 9 lbs Made in USA Pickup & Shipping Pickup available in Richmond Hill. Shipping is also available — please inquire for rates and options. Don't miss this rare chance to own one of the most celebrated crowd-funded audiophile components ever produced, in essentially new condition, at a significant saving over the original retail price.