Practical Devices

Hi everyone... Practical Devices Corporation has released the XM5 Portable headphone amp. AFAIK, this amp represents the most features ever squeezed into a portable. Strong, clean, smooth, unsurpassed sound quality is made possible by the XM5's four-chip amp/buffer system: a two-chip ultra-low-distortion FET amplification stage, mated to separate two-chip output buffering, all in a monoblock configuration. The four gold-plated sockets allow for rolling amp chips and/or output buffers to exactly suit your taste. Available in two colors: black/black, or blue/silver. We're pretty excited about this amp - it really does have a lot to offer. Key Features: USB DAC (44.1/48kHz) Buffered Output Monoblock channel configuration Quad gold sockets, for rolling amps and buffers Switches for: Bass, Treble, +10dB Gain Boost, CrossFeed, 75O output impedence, and USB/Line-In select Variable Active CrossFeed Auto power-off Robust, all-aluminum construction, fits under a credit card +103dB SNR .001% THD Low-battery indicator Lithium-Ion FastCharge 1-hour no-hassle universal charger Intelligent Microprocessor control Looks, feels, and sounds spectacular and lots lots more. No other portable has all this in one package Photo Gallery: http://www.practicaldevices.com/xm5_pictures.htm XM5 Details: http://www.practicaldevices.com/ PDF User's Manual: http://www.practicaldevices.com/downloads.htm Regards, James

Free Shipping Offer: Practical Devices Corporation is pleased to offer Free Shipping for the XM4 Portable Headphone Amp to all SGHeadphones members, during June and July. Instructions: 1) Place your order on our website http://www.practicaldevices.com/purchase.htm and pay using PayPal, before July 31,2007. 2) After placing your order, PM the Paypal Transaction ID# number to me. 3) Your shipping cost will be refunded via Paypal. Note: Orders are shipped with a declared value of $60USD. We ship World-wide. You will also receive the free bonus interconnect cable shown in the above weblink. The free shipping offer does not apply to ebay purchases. Standard warranty and money-back guarantee apply. The optional Lithium FastCharge system includes a world-compatible charger (works with 230AC/50Hz; you may need a plug adapter, depending on your wall outlet). About the XM4: The XM4 builds on the success of the company's XM3 by adding Bass Boost, and an optional Lithium-Ion FastCharge system. The XM4's robust anodized aluminum case with glossy laser-anodized faceplate houses military-precision resistors, oversized electrolytic and tantalum capacitors, plus an ultra-low distortion gold-socketed amplification chip. Signal to noise ratio (SNR) is a staggering low 100dB, total harmonic distortion (THD) is rated at 0.002% THD, and overall frequency response is from 20Hz to 20kHz. The optional Lithium-Ion FastCharge system gives a healthy 40 hours of battery operation, while requiring only one hour of recharge time using the world-compatible AC adapter. Two front-panel LEDs (one blue, one amber) indicate power and status, and can be dimmed. A front bass boost button gives a +6dB boost at 100Hz, while another front button enables the rear panel's Crossfeed Adjuster, a knob that provides for output from near-stereo to 100% monophonic sound. The amp provides +13dB of gain, but an internal jumper can be user-configured to give an additional boost of +10dB (giving a total of +23dB), which allows the XM4 to effortlessly drive even very-high-impedence high-end headphones. Specs: +100dB SNR 0.002% THD Bass Boost button Crossfeed Button Variable Crossfeed Adjust Switchable Gain boost (+10dB) Auto Power-Off Low-battery indicator Optional Lithium-Ion FastCharge® System 40 hours battery life; 1 hour FastCharge Intelligent Microprocessor-controlled Solid aluminum case and volume knob Laser-Anodized front panel Dimensions: 3¼" x 2¼" x 1" (84 x 57 x 25mm), plus knob Weight: 140 grams (4.9oz) Links:Picture Gallery What's Included pdf User's Manual Full Specifications XM4 Product Details