Ampeg B4R Bass Guitar Amplifier Head The Ampeg B4R delivers straight-ahead power and tone that let you rock like a world class act - even before the royalty checks roll in. When you're ready to BE a player, crank out the powerful textured sound that gets you there. The popular two-rack space B-2R uses a 350-watt Mos-Fet amp, while its bigger brother, the 1,000 watt B-4R is the most powerful in its class. Introduced in 1999, this powerhouse head gives you everything you need for today's music.
In the world of high performance bass amps, Ampeg amplifiers stand alone. In true Ampeg tradition, the
B4R offers you more power, performance and flexibility than any other bass amplifier in its class. The outstanding
features of your new amplifier, features which set it apart from the competition, are listed below.
- DUAL SEPARATE POWER AMPLIFIERS: Operate in true stereo or mono bridged
mode for even greater output power.
- BIAMP CAPABLE: Adjustable crossover frequency control. Low-to-high frequency balance control.
- 5-POSITION STYLE CONTROL: Take your pick from five different tone variations to best suit your playing style.
- TEXTURE CONTROL: Changes your tone for a more aggressive sound.
- 9-BAND GRAPHIC EQ: Switchable at front panel or with a footswitch, you can use this as a “second channel” for bass solos, or to shape your sound to your own exacting
standards. An independent level control lets you adjust the Graphic EQ volume.
- EFFECTS MIX: Varies the amount of external effects mixed into the signal.
- TUNER OUT JACK: Allows connection to an electronic tuner and provides an “always live” monitor feed even when the output is muted.
- HEAVY-DUTY SPEAKER JACKS: For more reliable connections at higher outputs and for mono bridged connections: dual binding posts or Speakon® jacks.
- BALANCED AND UNBALANCED LINE OUTPUTS: Independent level control. Balanced XLR and unbalanced 1/4” output jacks. Switchable pre or post EQ.
- EFFECTS LOOP: Connect your effects here for increased intensity and quieter operation.
- POWER AMP IN/PREAMP OUT: Two separate loops, one for each channel: a separate preamp may be connected to the Power Amp In jack, and the Preamp Out jack may be connected to a slave amp.
- FOOTSWITCH CONTROL: Use a footswitch to activate the Graphic EQ and the Mute feature.
- CIRCUIT BREAKER PROTECTION: A heavy duty resettable circuit breaker provides protection against fault conditions.
The History of AMPEG...
In 1946, Everette Hull, an accomplished pianist and bass player, organized a partnership with Stanley Michaels under the name "Michaels-Hull Electronic Labs." Their mission was to produce a new microphone pickup that Hull designed. The pickup was fitted on the end of an upright bass and was dubbed the Amplified Peg or "Ampeg" for short.
In 1949, Hull became the sole proprietor and changed the name of the company to the Ampeg Bassamp Company. Since that time, Ampeg has produced some of the music industry's most innovative and memorable products, satisfying the needs of musicians all over the world. Many of these products feature incredibly unique features and performance capabilities resulting in six U.S. patents under the Ampeg brand name.
In 1960, a design engineer by the name of Jess Oliver created a combo amplifier with a chassis that could be inverted and tucked inside the speaker enclosure, protecting the inner workings and increasing the portability of the amp. Nicknamed the "Portaflex," this amplifier became the standard in bass combos throughout the 60's and 70's.
Also in the early 60's, Ampeg was the first company to incorporate reverb in an amplifier. The Reverb rocket preceded Fender's Vibroverb (often thought of as the original) by nearly 2 years. In 1969, Ampeg set out to design the most powerful amplifier ever made. At that time, 50-watt amps were considered more than adequate. 100-watt amps were considered "plenty loud." Ampeg, however, not only harnessed 300 watts of pure tube power but actually created a new valve (tube) technology - Super Valve Technology, or the SVT. Now the most sought after stage amplifier, the SVT has proven its road worthiness on stages around the world.
In 1986, St. Louis Music, Inc purchased Ampeg and continues the tradition of making quality, musician-satisfying products. The current series of Ampeg Classic models, Pro Series products, "B" Series heads and combos as well as the updated re-issue Diamond Blue Series are among the latest in the evolution of the professional, innovative and feature laden amplifiers available.