RB Series Bass Heads
GK’s RB Series bass amplifiers have been the standard for over two decades. Inside these compact, lightweight ’super structures’ is the most advanced bass circuitry available. In 1972, Bob Gallien developed what he calls „G.I.V.E“ Technology (Gate Induced Valve Effect). This ’valve effect’ is integrated into the design of all RB series heads and is part of what gives them their distinct sound. The RB Series heads deliver a warm, punchy tone with a fast transient response that not only sounds better– it feels better. GK’s reknowned voicing filters and intuitive four band active EQ make it simple to dial in a great sound. Every day, thousands of players around the world in arenas, clubs and basements plug into GK heads because they love that sound!

Model

400 RB-IV

700 RB-II

1001 RB-II

2001 RB

Price ex VAT

£ 378.35

£ 466.00

£ 582.86

£ 1,167.18

Price inc VAT

£ 444.56

£ 547.55

£ 684.86

£ 1,371.44

POWER <1% THD:

280W@4ohm, 180W@8ohm,
1 kHz
Main Amp-480W@4ohm, 320W@8ohm, 1 kHz. -- Horn Amp-50W@8ohm, 5kHz Main Amp-700W@4ohm, 460W@8ohm, 1kHz -- Horn Amp-50W@8ohm, 5kHz

Main Amp-2x540W@2ohm, 1080W Bridged@4ohm 1kHz -- Horn Amp-2x50W@8ohm, 5kHz

COOLING:

Continuously Variable
Speed Fan
Continuously Variable
Speed Fan
Continuously Variable
Speed Fan

Dual Continuously Variable
Speed Fans

INPUT SECTION:

Ultra low noise S/N>90dB, Clip LED, -14dB Pad, Volume, Mute Switch and Mute LED Ultra low noise S/N>90dB, Clip LED, -14dB Pad, Volume, Mute Switch and Mute LED Ultra low noise S/N>90dB, Clip LED, -14dB Pad, Volume, Mute Switch and Mute LED

Ultra low noise S/N>90dB, Clip LED, -14dB Pad, Mute Switch, Mute LED and A/B Switch

HIGH GAIN (B):

- - -

B LED, Gain, Edge, Bottom and Level Controls

LOW GAIN (A):

- - -

A LED and Level Control

VOICING FILTERS:

5/4 String Voicing, Adjustable Contour and Presence 5/4 String Voicing, Adjustable Contour and Presence 5/4 String Voicing, Adjustable Contour and Presence

5/4 String Voicing, Adjustable Contour and Presence

EQUALIZER:

Four Band Active Four Band Active Bass Specific Series Four Band Active

Four Band Active

OUTPUT:

Boost and Master Boost, Tweeter Level w/ Hi-Cut Switch and Woofer Level with Hi-Cut Switch Boost, Tweeter Level with High-Cut and Woofer Level with High-Cut

Boost, Tweeter Level with High-Cut and Woofer Level with High-Cut

DIRECT OUT:

XLR, Ground Lift and Pre/Post Switch XLR, Ground Lift, Pre/Post Switch and Level Control XLR, Ground Lift, Pre/Post Switch and Level Control

XLR, Level Control, Ground Lift and Pre/Post Switches

PATCHING:

Send, Return and Tuner Out Send, Return and Tuner Out Send, Return and Tuner Out

Send, Return, Tuner Out, Chain in, Chain Out and Footswitch Jack

SPEAKER OUT LEFT:

Two 1/4" jacks Two 1/4" and Two Horn Bi-Amp Compatible Speakon Connectors -

Two 1/4" and two Horn Bi-Amp Compatible Speakon Connectors (Bridge/Mono), Bridge/Mono Switch

SPEAKER OUT RIGHT:

- - -

Two 1/4" and two Horn Bi-Amp Compatible Speakon Connectors

CONTROL:

- - -

Trigger In, Trigger Out and IEC Power Connector

WEIGHT:

15 lbs 19.5 lbs 22 lbs

42.5 lbs

DIMENSIONS:

19"W x 3.5"H x 8"D

19"W x 3.5"H x 8"D

19"W x 3.5"H x 8"D

19"W x 5.25"H x 12"D

RB Bass Heads MANUALS & SPECS
400RB-IV Manual & Specs 700RB-II Manual & Specs
700RB-II Adendum
1001RB-II Manual & Specs
1001RB-II Adendum
2001RB Manual & Specs