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Effectrode Blackbird SR-71 Owner's Manual

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S p e c i f i c a t i o n s

• Input impedance: Greater than 1MΩ

• Output impedance: Less than 1KΩ +10dBu

• Controls: Dedicated Bass, Mid, Treble, Volume

controls for each channel (Gain on drive channel)

• Features: Separate clean and overdrive channels

• All tube: Hot-rodded overdrive channel based on 4

class-A tube stages. 'Blackfaced' clean channel

• Direct out: 600Ω balanced transformer isolated

+16dBu output via ¼" TRS (stereo ) jack socket

• True bypass: With 'anti-pop' foot-switching circuitry

• Power requirements: 12VDC @ 1A centre positive

• Dimensions: width 7.5"; depth 4.8"; height 1.3"

• Weight: 2lb ( on Earth); 2 × 10

• Construction: Solid die-cast aluminum alloy case

• Finish: Tough graphite black powder coat

SR-71

Serial #

lb (a neutron star)

Thermionic

Owner's Manual

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Page 2 Thank you for supporting Effectrode pedals. We P o t s wish you many years of musical enjoyment from this very special hand-built, all-tube pedal.
Page 3 Shifting the bias point will reduce the gain and C o n t r o l s increase the sensitivity of a 12AX7 tube so that it Classic/Creamy toggle switch selects between performs more like a lower gain 5751 giving a wider classic rock/blues drive tones (switch ‘up’) and a sweet-spot for breakup and blues sounds.
Page 4 producing a balanced and robust distortion. As the There’s no substitute for the sound of a real tube Gain is further wound-up the pedal will begin to amp moving some air , however the direct output is produce progressively more saturated singing lead useful for recording in venues with poor room tones and effortless pinch harmonics.