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Matched, dual-phase 993SD gain stage improves thermal tracking and optimizes ground Variable Blend control allows recordings with hard-panned images or mono LPs played with stereo cartridges to create a stable center image Ethernet connection downloads future software updates and connects to IP-based home control systems Three balanced outputs can be operated independently for multiple zones or together for bi- or tri-amplification Boulder's own fully-balanced volume control significantly reduces distortion and step noise Programmable Soft mode temporarily reduces output to levels suitable for conversation Independent, real-time controls to adjust gain on all active inputs and outputs Separate enclosures for left and right analog sections keep all control and power circuitry from affecting sound Large, full-color, 14.9-inch (38 cm) LCD display clearly indicates all controls, settings, and audio paths Network browser control of all preamplifier functions Separate power supply chassis with individual supplies for left channel, right channel, preamp control, and low-power Standby mode HTML page to program setup preferences, input and output options, and custom input and output names Programmable Theater Mode enables seamless use in home cinema systems OpenHome compatibility for use in network controlled and distributed home A/V systems Low power consumption Standby mode is compatible with all energy efficiency requirements
Specifications
Balanced Inputs- 6 via 3-pin XLR
Balanced Outputs, Dual- 3 via 3-pin XLR
Auxiliary Balanced Output- 1 via 3-pin XLR
Maximum Input Level- 7 Vrms
Maximum Output Level- 28 Vrms
THD+N, 2V Output, 20 Hz to 5 KHz- 0.0008% (-102 dB)
THD+N, 2V Output at 20 KHz- 0.001% (-100dB)
Maximum Voltage Gain- 20 dB
Volume Range- 100 dB
Volume Steps- 0.1, 0.5, 1.0 dB ± 0.01 dB
Auxiliary Path Gain- -1 dB
Frequency Response, 20 Hz to 5 KHz- +0.00, -0.03 dB
Frequency response, -3dB- 0.02 Hz & 300 KHz
Input Impedance- 333kΩ, Balanced
Output Impedance- 100Ω, Balanced
Power Requirements- 90-120V/200-240V, 50-60 Hz
Power Consumption- 240W Maximum
Preamplifier Chassis Dimensions- 19” (48.25 cm) W x 18” (45.75 cm) D x 9.25” (23.5 cm) H
Preamplifier Chassis Weight- 78 lbs. (35.4 kg)
Power Supply Chassis Dimensions- 19” (48.25 cm) W x 18” (45.75 cm) D x 5.1” (13 cm) H
Power Supply Chassis Weight- 45 lbs. (20.4 kg)
Shipping Dimensions- 27” (68.6 cm) W x 33” (83.8 cm) D x 26” (66.1 cm) H
Shipping Weight- 235 lbs. (106.6 kg)