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Tube Box DS

Performance tube phono stage with continuously variable loading

$699.00

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Tube Box DS is a high-end MM/MC phono preamplifier featuring an unprecedented level of flexibility at its price point. It is based on a dual-mono circuit topology featuring a matched pair of premium ECC-803 Golden Pin Tubes. Premium parts are employed throughout the preamplifier circuitry including costly ultra-low noise semiconductors. Unique to this model is continuously variable control of cartridge input impedance loading. By being able to adjust anywhere within the range of from 10-1,000 ohms, you can dial in the perfectly appropriate impedance for your particular phono cartridge therefore achieving the cartridge's optimized performance. Gain adjustment is also selectable in three steps of 40/50/60 dB, covering a wide range of both Moving Magnet of Moving Coil cartridge brands. For Moving Magnet cartridges input capacitance is also variable. A switchable subsonic filter is also provided that can filter out frequencies below 20Hz.

DOWNLOAD USER MANUAL

TECHNICAL SPECIFICATIONS

Tubes
2 x ECC-803 Golden Pin Triode Type

Load Impedance
Variable from 10 - 1,000 ohms

Input Capacitance
Variable 47pF, 147pF, 267pF and 367pF / 47k ohms

Input Gain
40dB / 50dB / 60dB

Noise Floor
-82dB

THD
0.1%

RIAA Curve Accuracy
20Hz-20kHz / max 0.5dB

Subsonic Filter
20Hz at 18dB/octave, Switchable

Input
1pr RCA Jacks

Line Level Outputs
1pr RCA Jacks

Power Supply Output Voltage
18 VAC / 1,000mV

Power Consumption
490mA DC

Dimensions (WHD)
4.1 x 2.9 x 5.7 in., 103 x 72 x 144 mm

Weight
2.4 lbs., 1,100g

Finish
Black or Silver

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