GUSTARD P26 Discrete Class A Balanced preamplifier XLR RCA

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Gustard P26 Balanced preamplifier

Class-A Discrete preamplifiers LM49860 - 130dB SNR



Gustard P-26 adjustable preamplifier input gain


Gustard's P16 is an advanced preamplifier / volume controller / souce 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.

P26 Gustard operational amplifier LME49860

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 subcircuits.

The output stages are constructed from discrete components with differential signaling architecture, which ensures excellent stability in output signal.

Analog attenuation


Thanks to a relay matrix driven by a logic circuit ALTERA MAX, the P16 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 confort of digital control and the ability to change the volume remotely.

Preamp CPLD altera relay analog volume
P 26 preamplifier regulated linear power supply audiophile

Linear regulated power supply


Gustard P26 carry 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

front view P26 Gustard OLED screen


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 control are also available on the front panel. An ON / OFF button, a control button to select the source and configure the input / output gain. Finally, a rotary controller is used to adjust the volume level.

The OLED monitor screen shows real-time the active source, the current volume level and the in / out gain parameters.

Connectivity

Gustard Sortie P26 connectique preamp symétrique
AUnbalanced RCA output
BBalanced XLR output
CBalanced XLR Input 2
DBalanced XLR Input 2
EUnbalanced RCA Input
F230V/110V selector
GIEC Socket (AC IN)


P16 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.

Specifications
TypePreamplifier
Volume Control
Gain ControlIndependent input gain / output gain control
Output impedanceXLR: 100Ω
RCA: 100Ω
Maximum Output LevelRCA: 9.5Vrms
XLR: 19Vrms (+ dBu)
ClassAC 115V / 230V 50 / 60Hz (manual adjustment).
AOP2x dual op amp LM49860
Mounted on DIP8 stand (replacable)
InputsBalanced XLR x 2
Unbalanced RCA x1
OutputsBalanced XLR x1
Unbalanced RCA x1
THD + N< 0.00035% 20-22kHzBW @ 18dBu (gain In) 18dBu (gain Out)
Channel crosstalk-130dB @ 20-20KHz
SNR130dB
Frequency response20-20KHz /+-0.1dB
Power consumptionless than 20W
Power supplyAC 115V / 230V 50 / 60Hz (manual adjustment).
 
Data sheet
InputRCA
InputXLR
OutputXLR
OutputRCA
ColorBlack
Channel2 channels (Stereo)
ClassClass A / AB
 
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Average votes
5.0 / 5
1 reviews
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Superbe
Très très bon préamp !
Droit, dynamique, silencieux. Si vous recherchez un modèle pour réchauffer un peu votre son, celui-ci n'est pas fait pour vous.
Si, en revanche, vous voulez de la dynamique, de la transparence, du silence et du gain, alors oui, considérez le P26 comme un excellent choix.
En entrée Pré In de mon PSE 300ß, le mariage est superbe !
De plus, il est beau, bien fini, de taille intermédiaire, la réception IR très réactive, l'écran OLED jamais éblouissant.
Bref, superbe pour un prix très abordable.
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