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Esoteric Grandioso C1X

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Beyond Convention: The Next Generation of Preamplification As the control hub of Esoteric's flagship Grandioso X series, this preamplifier represents a fundamental reimagining of what's possible. Building on the award-winning legacy of the Grandioso C1, our engineers focused on revolutionizing the volume control architecture—the very heart of any preamplifier—to achieve unprecedented precision and sonic clarity. This breakthrough establishes a new benchmark for discerning listeners who demand the absolute best. Decades of Esoteric engineering excellence converge in a preamplifier crafted for the most demanding audiophiles.

Analog audio inputs  
XLR/ESL-A 3 pairs
Input impedance 50kΩ
Input sensitivity 500mV (at reted output)
Maximum input level 12V
RCA 2 pairs
Input impedance 68kΩ
Input sensitvity 500mV (at rate output)
Maximum input level 12V
Analog audio outputs  
XLR 2 pairs
Output impedance 30Ω
Rate output 2V
Maximum output level 17V
ESL-A 2 pairs * Option: Changing the ESL-A terminals with RCA terminals.
Output impedance 30Ω
External Control  
RS-232C  
Terminal D-sub 9-pin × 1
TRIGGER IN  
Terminal 3.5mm Monaural Mini jack × 1
Input Level 12V, 2mA
TRIGGER OUT  
Terminal 3.5mm Monaural Mini jack × 2
Output Level 12V, 100mA (total)
General  
Power supply  
  AC 120V, 60Hz
  AC 220-240V, 50/60Hz
Power consumption 15W (L), 15W (R)
External dimensions (W×H×D)  
Main unit 445 × 132 × 449mm
17-⅝" × 5-¼" × 17-⅝" (including protrusions)
Power unit 445 × 132 × 452mm
17-⅝" × 5-¼" × 17-⅞" (including protrusions)
Weight  
Main unit 20.2kg / 44.6 lb
Power unit 29.0kg / 64 lb
Included accessories Power cords × 2
DC power connection cords × 2
Remote control (RC-1334) × 1
AA batteries × 2
Felt pads × 8
Owner's manual × 1
Warranty card × 1

 

Audio performance

Frequency response 1Hz to 150kHz (–3dB, XLR IN, XLR OUT)
S/N ratio 120dB (2V input, A weight, XLR IN, XLR OUT)
Total harmonic distortion 0.00035% (XLR IN, XLR OUT)
Gain +12dB (XLR IN, XLR OUT)

 

  • This product is available in three different power supply variations, as shown in the chart above. Make sure that the voltage shown on the rear panel matches the AC line voltage in your area.
  • The shape of the AC inlet and plug of the supplied power cord depends on the voltage rating and destination country.
  • Design and specification are subject to change without notice.
  • Weight and dimensions are approximate.

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