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Page 2: ... preamp again Both the VRE 1 and its power supply are placed in bags to protect their finish during shipping The power supply is finished in durable powder coat a tough scratch resistant finish This may be cleaned with any sort of spray cleaner and a paper towel etc The VRE 1 is built of Corian a registered trademark of the DuPont corporation see www Corian com for more information a solid surface...
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Page 4: ...end clockwise until you hear the locking click To disconnect slide the locking tab back and rotate the cable end counter clockwise until it stops and then pull it out Connect your source equipment and amplifier using balanced connections if you have the option Leave your amplifier turned off for now and make the AC power connection to the VRE 1 Check to see that the blue power LED is lit on the po...
Page 5: ...ote control hand unit Home Theater Bypass button and LED indicator Press and hold this button for 3 seconds to engage the Home Theater Bypass mode and light the indicator LED This adjusts the volume to a preset user programmed setting unique for each input This is useful in Home Theater applications and when doing critical listening that requires returning to a specific reference volume level Pres...
Page 6: ...ier Monitor Out Defeat Switch In the interest of maximum purity of the main signal path the Monitor Out buffer may be switched off defeated if it is not being used Just switch this on or off as needed Circuit Ground Connector This binding post offers access to the system electrical ground if needed There is normally no connection to this post Main Input Group 4 pairs of inputs are provided labeled...
Page 7: ...s button again to wake the unit up with the same settings Polarity Toggles system polarity in the same manner as the front panel button Volume Up Down Pressing the upper button increases volume pressing the lower button decreases volume Mute Pressing the center button in Volume mode toggles the Mute function 7 ...
Page 8: ...e mute by pressing the mute button on either the front panel or remote control the blue mute LED will turn off You should hear sound at a moderate level the volume is set to a moderately low level by default on turn on Change the volume as desired by using the front panel knob or remote control You can experiment with system polarity by pressing the polarity button and listening to the result This...
Page 9: ...he main front left and right channels for 2 channel stereo playback The left front and right front outputs from the surround processor are fed to one of the VRE 1C s inputs Using the surround system setup tools a reference level signal is fed to each channel for adjustment to the proper volume Use the programming feature detailed above to set and program the proper reference volume setting for thi...
Page 10: ...ansparent window onto the original recording or master tape Tubes simply do not fit this goal My listening tests led me to an exceptionally transparent JFET buffer circuit with no gain which when paired with my choke filtered power supply produces unparalleled overall performance When I found the right set of coupling transformers Lundahl on the input Jensen on the output the last pieces of the pu...
Page 11: ...across the space and venue of the original recording Effortless dynamic expression from the quietest passages to the loudest the VRE 1 portrays music s full dynamic power and subtlety from the thunderous strike of a drum to the nearly subliminal shift in a singer s breath Pinpoint focus and localization of instruments and voices within a 3 D sound field exquisitely clear individualization of music...
Page 12: ...ing evaluations with a wide variety of cable options Even the AC inlet is chosen for superior clarity and transparency Each power supply is voiced by ear before delivery which involves listening to the various permutations of transformer secondary wiring Its design and construction is an exercise in total overkill its current capability vastly exceeds the requirements of the VRE 1 but I feel this ...
Page 13: ... fact that I use a particular brand is no guarantee that they will work as well in your system You must evaluate cables by listening to them in your own system and you must not allow yourself to be overly swayed by reviews and other opinions Trust your own ears and your own judgement Break in Period The notion that audio equipment changes how it sounds or breaks in over time is controversial in so...
Page 14: ...lly set at 6dB gain Bandwidth 3dB 5Hz 170KHz varies with gain setting Input impedance 10KOhm Output impedance 50 Ohms 0dB gain 200 Ohms 6dB gain Power consumption 10W maximum Dimensions 17 5 W x 12 75 D x 5 H includes hardware feet Weight 25 lbs VRE 1 POWER SUPPLY AC Mains fuse T1A 115VAC T 5A 230VAC Refer to the addendum on using your VRE 1 for further information on fuses Dimensions 10 25 W x 9 ...
Page 15: ...iginal wooden prototypes and subsequent Corian models made this project a reality Jerry Boncer For all of his help in the past and for his original design of the JFET buffer circuit that made its way into the VRE 1 Conrad Lindberg For all of his help with circuit development and board layout and numerous practical suggestions Lundahl Transformers For their enthusiastic support and useful technical...
Page 16: ...Audiophile fuses are a relatively new product offering and I have experimented with several different makes As of this writing I have a strong preference for fuses by Furutech and that is what I deliver in the VRE 1 However Furutech fuses blow more readily than other types so I have switched to 2A for 115V models and 1A for 220 240V models to avoid nuisance fuse blowing Beyond the power cord and o...
Page 17: ...connection and Off switch centered no connection For safety reasons the earth ground remains connected to the power supply chassis at all times Please note that the use of a 3 wire grounded AC cord assumes that an appropriate earth ground connection is provided by your house AC wiring Your VRE 1C will operate regardless of the position of this switch However I suggest that you experiment with the ...
Page 18: ...t ground switches to inputs 2 and 4 to solve this issue This solution is incorporated into current production units and may be retrofitted into any earlier VRE 1 The photo below shows the new switch layout Normal operation is to leave the switches up in the float position unless a noise issue is encountered with a particular piece of source equipment In this case moving the switch down to the grou...
Page 19: ...G and Shunyata wire for the connections A separate 22ga wire is used for the XLR pin 1 connection to chassis ground and I terminate it with a stacking type banana plug to facilitate the use of multiple adaptors If you prefer you can build them yourself Connect the wires as follows note that these are NOT wired like industry standard XLR RCA adaptors XLR pin 1 flying lead to stacking banana plug sh...
