Apora Grandiose

• Fabricant : Apora
• Modèle : Grandiose
• Catégorie : Préamplis hybrides
• Fiche créée le : 10/02/2015

Dual Channel Valve Microphone Preamp with digital control

• 100% hi-fi analog components managed by the digital microcontroller front-end system
• A 6 dB pad switch allows to select series or parallel transformer connection for the microphone input
• input level switch has ten steps that set the gain of the first tube stage and controls the input level that "drives" the preamp. The output level attenuates the signal going into the second tube stage in 63 steps
• Phantom switch turns on 48V fully-balanced power
• filter switch selects between 150 or 300 Hz high pass filter. 
• The signal phase (polarity) reversal switch controls the polarity setting at the output transformer stage.
• 99 available memory banks or remotely via Ethernet network from the computer (Mac/PC)
• Hi-Z input switch enables the instrument input jack socket on the front panel (very-high impedance) perfect for DI like bass guitar, keyboard and of the like
• Ground lift on both input and output

• Mic input impedance: 150 / 600 Ω ( w / 6 dB pad)

• Mic input load impedance: 1.5 k / 6 kΩ (w / 6 dB pad)

• Minimum input level: -71 dBm

• Maximum input level: -25 dBm @ 20 Hz

• High Z input impedance: >2 MΩ

• Gain: 62 dB minimum, 65 dB nominal (dependant on tube selection)

• Form factor: 19" 3U

• Frequency response: +/- 0.2 dB, 20 Hz ~ 20 kHz

• THD + noise: 0.15%, 20 ~ 20 kHz

• Phantom power supply: 48V balanced

• Tubes: 4x ECC82 (12AU7)

• Ethernet port: 10/100Base-T IEEE 802.3