pass TM X0.2 Owner’s Manual May 18, 2006 X0.
Introduction The X0.2 is an ultra high quality three chassis line-stage audio pre-amplifier featuring remote control and internal power supply. It combines a completely new circuit topology with traditional construction representing thirty five years of preamplifier design. This pre-amplifier flows from a commitment to create the best sounding product: a simple circuit with the most natural sonic characteristics. Derived from US Patent # 5,376,899, the X0.
Setup The pre-amplifier consists of three machined aluminum chassis; it has five sets of input connections, two sets of outputs, both singleended and balanced, a tape loop and a full function remote control unit that mirrors the front panel functions. The power supply control chassis has a 5-way binding post that is used for remote amplifier turn-on. The pre-amplifier’s voltage and current rating are indicated by the affixed tag on the bottom of the pre-amplifier’s power supply control chassis.
signal typically adds additional gain stages and degrades the inherent noise and distortion superiority of balanced signal, coloring what you eventually hear. Pass Labs, through its unique patented “Supersymmetry” topology, maintains the advantages of a true balanced signal throughout the electronics chain.
There are a total of five inputs, a separate tape loop and two outputs on each of the pre-amplifier chassis. One chassis is exclusively dedicated to right channel and the other exclusively left channel. Balanced inputs and outputs are via XLR connectors. Singleended inputs and outputs are via RCA connectors. On the XLR connectors, pin 1 is grounded, pin 2 is the positive signal, and pin 3 is the negative signal.
Description of Operation In application the X 0.2’s front panel controls and alphanumeric display are quite straight forward, and intuitive. We encourage you to become familiar with their operation prior to establishing any input connections with this unit. Experience indicates that engaging in a few minutes of exploration and playtime will add much to your ultimate enjoyment of this exceptional Pass Labs product.
up/down arrows. The up arrow toggles to a straight through function with neither attenuation nor gain. This function is useful in that it allows the pre-amplifier to function as a unity buffer for use with components that best function with their own volume controls, such as surround processors. When the right-front and left-front outputs of the processor are routed through input 5 of the X0.2 (with the gain of the X0.2 set for Unity gain), the volume will be under full control of the processor and the X0.
The electronic volume control allows greater than 70 dB range and is driven by a micro-controller that reads the optical encoder which serves as a front panel volume control. In this manner tracking of the volume for the two balanced channels is possible with accuracy unavailable on any ordinary volume control, assuring precise level steps and high common mode rejection in balanced circuits.
With balanced operation, the common mode rejection of the preamp reflects the intrinsic common mode rejection of the topology, the matching of the gain devices, and the matching of the attenuator channels. In this case we have been able to keep the total mismatch to about .1%, for a common mode rejection of greater than -60 dB.
X0.2 Specifications All figures obtained after 1 hour warmup, with regulated 120 VAC power line. See manual notes about AC power line regulation. Gain, Balanced Gain, single-ended Freq. Response Distortion @ 1KHZ Maximum Output Output Impedance Input Impedance CMRR Crosstalk Output Noise floor Extl amp turn on Power Consumption Dimensions Shipping Weight 12 dB Bal in, Bal output 12dB unbal in, unbal output -3 dB @ 2 Hz -3 dB at @ 100 kHz < .1 % THD, typ .
Warranty Information Please check with the factory-authorized distributor in the country you are purchasing this product for specific warranty information. All Pass Laboratories products purchased from an authorized Pass Laboratories dealer in North America are covered by a transferable, limited 3-year warranty. This warrantee includes all parts and labor charges incurred at the repair facility in addition to return shipping to the domestic customer, exclusive of subsequent damages.
For your protection please read the following: Water and moisture: Electrical devices should not be used near water ( as per example, near a bathtub, washbasin, kitchen sink, laundry tub, wet basement or swimming pool ). Care should be taken such that objects do not have the opportunity to fall, and that liquid is never spilled onto or into the device enclosure through openings.
