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Gustard P26 Discrete Class A Balanced Preamplifier
>Gustard's P26 is an advanced preamplifier / volume controller / source selector (3 Inputs). It will delight audiophiles looking for a fully balanced circuit with volume control to drive a power amplifier in any demanding audio system.
>It offers an innovative option to configure separately the input gain from the output gain. This is a particularly useful feature that allows operation even with devices that have very different specifications.
>Audiophile circuit design - This preamplifier has a circuit designed for fully balanced applications. Thus the inputs, the volume control, the preamplification stage are all fully balanced with no conversion stage at all. It uses two high-performance stereo LME49860 operational-amplifiers mounted on DIP-8 support (removable). The latter can then be renewed / changed in order to adapt the overall sound signature. The amplification stage is hybrid, that is to say it relies on OPA as well as discrete components sub-circuits. The output stages are constructed from discrete components with differential signalling architecture, which ensures excellent stability in output signal.
>Analog attenuation - Thanks to a relay matrix driven by a logic circuit ALTERA MAX, the P26 is able to provide a constant and accurate volume on each channel. This type volume of control combines the best of both worlds with : the precision and finesse of pure analog attenuation as well as the comfort of digital control and the ability to change the volume remotely.
>Linear regulated power supply - The P26 carries its own linear regulated power supply with high speed low noise rectifier. It also benefits from a custom ultra-low noise discrete voltage regulator. The power supply finally uses a 50W toroidal transformer specifically developed for properly supplying this circuit. A selector on the back of the unit toggles between 230V / 110V power-grids.
>Display, front controls and infrared remote control - The P26 comes with an infrared remote control. This remote enables the user to access the volume, mute and source selection functions.
WARNING: In order to operate the remote control, please press and hold the AMP button on the remote control for 4 seconds. All controls are also available on the front panel.
>Connectivity - P26 has two balanced inputs on XLR stereo ports and one unbalanced input (stereo RCA). One RCA stereo output and one XLR stereo output are used to connect the P26 to a balanced or unbalanced amplifier.
>Technical specifications -
Gain Control: Independent input gain / output gain control
Output impedance XLR: 100Ω
Maximum Output Level
- RCA: 9.5Vrms
- XLR: 19Vrms (+ dBu)
Class: AC 115V / 230V 50 / 60Hz (manual adjustment).
AOP: 2x dual op amp LM49860, Mounted on DIP8 stand (replaceable)
- Balanced XLR x 2
- Unbalanced RCA x1
- Balanced XLR x1
- Unbalanced RCA x1
THD + N < 0.00035% 20-22kHzBW @ 18dBu (gain In) 18dBu (gain Out)
Channel crosstalk: -130dB @ 20-20KHz
Frequency response: 20-20KHz /+-0.1dB
Power consumption: less than 20W
Power supply: AC 115V / 230V 50 / 60Hz (manual adjustment).
Dimensions: Width 330 x Length 260 x Height 65mm