Boulder 2020 brochure

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The Boulder 2020 DAC receives the digital signal via one of six inputs. It is then completely de-jittered through the use of a phase lock loop circuit, essentially performing a reclocking of data. After processing in the 32 bit DSP, the 24 bit signal is transferred at data rates over 700kHz from the main chassis to the audio boxes. The five Burr Brown converters (per channel) yield the purest, quietest signal possible. From here the Boulder analog expertise takes over. All gain stages are the Boulder 993, the first in a special current to voltage converter circuit. It is deliberately bandwidth limited as the first step in removing digital aliases. Next a triple 993, six pole Bessel filter removes the remaining artifacts, but leaves the audio band untouched. A fifth 993 creates the balanced output. During creation of the Boulder 2020, it was obvious that there was a lack of attention to the analog in other designs. By including the required quantity of 993 stages, sonic clarity was taken to a level beyond any other design. A special feature is the ability to change the timing between channels. This time advance feature is useful in effectively moving the listening position to one side of the room, thus accommodating a favorite listening position. A remote control is provided to allow adjustment of this and other 2020 features. The three section chassis design (left audio, right audio, and digital) removes any interference between the analog and digital sections. An elegant combination of stainless steel, aluminum and powder coating complements any decor. Two digital outputs are provided. One follows the main source, while the second can be separately selected for simultaneously feeding a recorder. A separate 2000 Power Supply features three individually magnetically shielded toroidal transformers. Three independent regulated supplies power each of the audio channels and the DSP/ digital/display circuitry. The attention to detail in both the digital and analog sections will bring new life to your entire music library. B o u l d e r A m p l i f i e r s , I n c . 3 2 3 5 P r a i r i e Ave . - B o u l d e r, C O 8 0 3 0 1 3 0 3 - 4 4 9 - 8 2 2 0 - w w w. b o u l d e r a m p. c o m SPECIFICATIONS DIGITAL INPUTS 4 AES / EBU, Conver ts to SPDIF, 1 Toslink, 1 ST Glass DIGITAL OUTPUTS 2 AES / EBU, Conver ts to SPDIF ANALOG OUTPUTS 2 Balanced Main NOMINAL OUTPUT 4.0 Vrms ANALOG HE ADROOM 10 dB SIGNAL TO NOISE 118 dB A weighted, 115 dB f lat FREQ RESPONSE + 0, - 0.05 dB , 20 Hz to 20 kHz THD + N, 0dBFS 0.0 02 % , 20 Hz to 20 kHz CONVERTER 18.0 wide, 6.875 high, 16.25 deep (in.) POWER SUPPLY 18.0 wide, 4.25 high, 16.25 deep WEIGHT 90, Shipping : 115 Pounds POWER 120 VAC , 50 - 60 Hz, 18 0 W