UFO
Class A discrete tube microphone preamplifier with a VU meter, an illuminated tube and an external power supply. It is aimed at home and project studios that want to change tube character, with four tubes supplied.
- Class A discrete design with no ICs
- Four swappable tubes: 6922EH installed, three more in the pack
- Up to 68 dB gain, 10 Hz – 100 kHz response
- Balanced XLR and unbalanced 1/4" jack in and out
- +48 V phantom, polarity reverse, -20 dB pad
- Separate 115 V / 230 V power supply unit
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The UFO is a single-channel microphone preamplifier built around a Class A discrete circuit with no ICs. It provides up to 68 dB of gain and has a VU meter and a lit tube window. The tube sits under a transparent cover held by metal springs, so it can be swapped without tools.
Four tubes are supplied. The Electro-Harmonix 6922EH is pre-installed, and a tube pack adds a 12AT7EH and two Sovtek types, the 12AX7LPS and 12AX7WA. Each is described as giving a different tonal character, from neutral to warmer and more saturated. Front-panel switches cover +48 V phantom power, polarity reverse, a -20 dB pad and a mic/instrument selection.
Connections are a balanced XLR input and output plus unbalanced 1/4" (6.35 mm) jack instrument input and output. The power supply is a separate unit with switchable 115 V / 230 V operation and links to the preamp through a cable with a 5-pin mini-XLR connector. External transformers are used to reduce potential interference.
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Specifications
- Brand
- iCON
- Model
- UFO
- Category
- Studio › Preamps and outboard
Inputs
- Mic input
- Balanced XLR
- Instrument input
- Unbalanced 1/4" (6.35 mm) jack
- Mic input impedance
- 5kΩ 2x2.5Ω
- Phantom power
- +48 VDC
Outputs
- Main output
- Balanced XLR
- Instrument output
- Unbalanced 1/4" (6.35 mm) jack
- Output impedance
- 50Ω 2x25Ω
- Output level
- +35 dBu (20Hz - 40Hz, 10kΩ)
Audio
- Gain
- 0 dB - MAX: 68 dB
- Frequency response
- 10Hz - 100kHz
- THD
- < 0.005%
- Equivalent input noise
- -130 dB (61 dB gain, 10Hz - 20kHz, 50Ω)
- Dynamic range
- 131 dB
- Phase response
- <5° (10Hz - 20kHz, + 22dBu output)
Controls
- Switches
- Polarity reverse, -20 dB pad, Mic/Instr., +48V
- Metering
- Vintage-style VU meter
- Tubes supplied
- 4 (6922EH, 12AT7EH, 12AX7LPS, 12AX7WA)
Power
- Power requirements
- 115/230 VAC, 50/60Hz
- Power supply
- Separate unit, switchable 115V/230V
- Power supply cable
- 5-pin mini-XLR connector
In the box
- Preamplifier
- UFO Class A Discrete Tube Microphone Preamplifier
- Pre-installed tube
- 1 x Electro-Harmonix 6922EH
- Tube Pack
- Electro-Harmonix 12AT7EH, Sovtek 12AX7LPS, Sovtek 12AX7WA
- Other contents
- Power supply unit, power lead, Quickstart Guide