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User Review

Head to do everything - Reviews Gallien Krueger 700RB-II

Value For Money : Excellent
Transistor amp head
View previous opinions or for detailed specifications.
The 320W @ 8Ohms / 480W @ 4Ohms are more than sufficient for the vast majority of situations, I have only very rarely need to push more than half.
The DI output is good (used several times for recording, and often live), its adjustable output level is a plus.
It is regrettable available output jack of the loop and tuner on the front of the amp: it requires to run cables from the front, which is rather annoying when the head is rackée.
One of the most interesting knobs is the "boost", which I will discuss later.
The bi-amp is interesting, but it is not génialissime: it allows to dose more or less the volume of the signal sent to the tweeter or woofer independently. Very useful to reduce slamming and make his heavy, or do just the opposite.


With a single channel, the configuration of the head is very simple. The manual is very clear on this subject.


I use this amp mainly with a Warwick Vampyre SN, and leaving a flat EQ sound is already more than adequate.
The Boost knob I mentioned above is in several ways: as its name suggests, augment the overall signal level, but also adding grain, "GK growl" as they call it, which simulates somehow lamps amplification attacks. The effect is given a slight overdrive, very pleasant to the ear and beautifully suited to its already aggressive my bass.
Leaving this knob to zero, it remains more of a knob EQ standard presence and contour all more effective than others. You can get almost anything you want as sounds.
For information, I plug in the head two speakers of the same brand, the 115 and 410 Series RBH. Often only on the 410.
After having long Sansamp GT2 added to obtain a large saturation, I went on a Sansamp RBI, but not long enough to describe efficiency.


I use this head for 3 or 4 years, I tried several models from other brands but it is the strength of this that convinced me. I have not tried any other existing brands, but it suits me and I have as yet no reason to change.
The price / quality ratio is excellent for well under € 1000 was a head of power reassuring offering a wide range of sounds. Certainly I would do this choice without hesitation, although I would also feel the new series in GK Fusion.
I find, however, a pity that the dual channel only available on the 2001 model RB, which costs an arm and spit twice Watts.