Ruby '63 is UA's emulation of the British Top Boost valve amp that powered the British Invasion. It has the chime and jangle of that amp with its tube-powered vibrato, along with studio mic and speaker pairings and the boost effects players have long run in front of it.
Reach for it for jangly rhythm, ringing chords and the cutting midrange that sits so well in a band. Four amp presets and MIDI control come through the UAFX Control app. Players torn between this and the Dream '65 usually decide on chime versus sparkle: the Ruby for British, the Dream for American.
SPECIFICATIONS
POWER
Power Requirements (Power supply sold separately): Isolated 9VDC, center-negative, 400mA minimum
CONNECTIONS
Inputs: 2 x 1/4" unbalanced TS (input 2 for stereo connections)
Outputs: 2 x 1/4" unbalanced TS (output 2 for stereo connections)
USB-C: For registration and firmware updates via computer, USB MIDI, and wired USB control via UAFX Control app
USB MIDI: Yes; 4-Cable Method; Yes – assignable in UAFX Control app
AUDIO
Bypass Mode: Buffered bypass
Input Impedance: 500 Kilohms (Mono In); 1 Megohms (Stereo In)
Output Impedance: 500 Ohms
Maximum Input Level: 12.2 dBu
Maximum Output Level: 12.1 dBu
Frequency Response: 20 Hz to 20 kHz, ±1 dB
WIRELESS
Wireless Technology: Bluetooth v5
Transmitted Frequency Range: 2.400 – 2.4835 GHz
Maximum Output Power: +4.35 dBm
SIZE AND WEIGHT
Dimensions (with knobs and protrusions): Height: 2.56 inches, 6.5 cm; Width: 3.62 inches, 9.2 cm; Depth: 5.55 inches, 14.1 cm
Weight (unboxed): 1.24 lbs; 0.567 kg



