features may be provided with the active pickup, such as equalization, volume control and compression. Tuner Output Jack — The “tuner output jack” is provided to allow a tuner to remain plugged into the amplifier while playing. This output remains active when the “mute switch” is pressed, allowing for tuning your instrument while not sending signal to either the “direct output” or the speaker. Signal level of -30dB (typical hot bass level) will drive all known tuners.

Input Signal Mute Switch — The input on the NEOX400-210T bass amplifier includes an “input mute” switch. With this switch, you can place the amplifier (and the direct output) in standby mode between sets without having to change any of your volume settings. This feature is especially handy during the set when using the tuner output since you will still be able to use your tuner without having sound come from the amplifier or P.A. system. No more re-patching or fumbling in the dark! A red LED turns on when the input mute is active, reminding you that you are in “stand-by” mode. This feature is also controlled by the optional 4 button footswitch.

Input Gain Controls & O/L LEDs — The “input gain” controls, in conjunction with the signal and clip LEDs, allow you to adjust the preamp input gain sensitivities to the instrument you are playing. Basses can have an output level from a few thousandths of a volt to several volts. Generally, you want to see only an occasional flash of the red clip LED when you really hit the string hard, then adjust the master volume control for playing volume. Distortion of the preamp gain stage will occur when the red clip LED is illuminated, so plan accordingly. The best signal to noise ratio will result with the above method. Setting your playing volume will be a combination of the “FET gain control” (FET channel), “TUBE gain control” and “TUBE volume control” (TUBE CHANNEL) and the “master volume control”, depending in part on individual preference. Intentional overloading of the tube channel may be desirable and the O/L LED indicates that you are operating the tube preamp stage in the overdrive mode. The FET and TUBE preamps are switchable and mixable. These features are also controlled by the optional 2 button footswitch. Both CHANNEL O/L LEDS are active at all times monitoring each channel’s audio level, independent of channel switch position.

Signal Shaping Switches and Controls — There are 3 separate shaping filters on the NEOX400-210T. The “L.F. EXTEND” lowers the low frequency roll-off response of the preamp (between 30 and 45 Hz) to allow the full effect of 5+ string and extended scale instruments. The amount of extension is adjustable depending on the setting of the corresponding control. Use this function with care due to the power of this amplifier. The “MID SCOOP” function introduces a midrange scoop at approximately 800 Hz, with a lower “Q” than typical equalization provides. The amount of scoop is adjustable with the corresponding control. The “H.F. ATTACK” function increases brightness and sparkle (approximately 4KHz) of the signal, allowing exaggeration of percussive effects and string sound. The amount of attack is adjustable with the corresponding control. All 3 filters are footswitchable by the optional 4 button footswitch.

Active 5 Band Equalization — The “active 5 band equalization” used in the NEOX400-210T amplifiers is composed of 1 shelving low frequency control, 3 peaking midrange controls and 1 shelving high frequency control. These filters are not interactive and are effective as an advanced tone control system. The filters have a cut/boost range of +/- 12dB and a smooth, musical sounding response.

Low Frequency - 80 Hz

Low-Mid Frequency - 200 Hz

Mid Frequency – 500 Hz

High-Mid Frequency – 1250 Hz

High Frequency - 4000 Hz

Master Volume — The “master volume control” is post-eq, and adjusts the signal level sent to the power amplifier. Best results are usually obtained when this control is set between the 9 o’clock and 3 o’clock position.

Master Section Status Indicators —

∙The “power LED” indicates that the amplifier is on and the low voltage regulated power supplies are active.

∙The “protect LED” indicates that the amplifier is in “protect” mode and the output relay is de-energized. This

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Genz-Benz NEOX400-210T owner manual Master Section Status Indicators
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NEOX400-210T specifications

The Genz-Benz NEOX400-210T is a powerful bass amplifier developed for both professional and amateur musicians, particularly bass guitarists. Known for its reliability, impressive sound quality, and innovative features, the NEOX400-210T has established itself as a go-to choice for many players in various musical settings.

One of the standout features of the NEOX400-210T is its lightweight design. Utilizing advanced materials and construction techniques, the amplifier weighs significantly less than traditional models without sacrificing power or performance. This portability makes it easy for musicians to transport their gear to gigs or practice sessions, ensuring that the sound you desire is always within reach.

The amplifier boasts an impressive power output of 400 watts at 4 ohms, delivering a robust and clear sound that resonates well in live performances and studio recordings. The incorporation of dual 10-inch speakers provides an articulate low-end response, allowing bassists to achieve a rich, full sound that cuts through the mix. These speakers are housed in a specially-ported cabinet design that enhances bass response while minimizing unwanted resonance.

Another essential characteristic of the NEOX400-210T is its comprehensive EQ section. It features a 4-band EQ with adjustable controls for bass, midrange, and treble frequencies, enabling players to tailor their tone precisely to their liking. The presence of a parametric midrange control offers even greater flexibility, allowing users to pinpoint specific frequencies that best suit their instrument and playing style.

The NEOX400-210T also includes advanced technologies such as the unique Genz-Benz “Neo” speaker design, which utilizes neodymium magnets. These magnets provide a higher power-to-weight ratio, contributing to the overall efficiency and sound clarity of the amplifier. Additionally, the amplifier's construction features high-quality components that ensure durability and longevity, making it a solid investment for any bassist.

In summary, the Genz-Benz NEOX400-210T stands out in the world of bass amplifiers due to its lightweight design, substantial power output, flexible EQ options, and high-quality construction. With its combination of portability and professional-grade sound, it is an exceptional choice for players looking to elevate their performance whether on stage or in the studio. Whether you are a seasoned professional or an aspiring musician, the NEOX400-210T delivers the versatility and power needed to express your musical ideas effectively.
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