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BassMaster Bass Amps Series - XS800H - Bass Head - 800w
The eight hundred watt XS800H is the highest-powered tube hybrid bass head in the BassMaster line.
What truly sets the XS800H apart from the rest of the class is its versatile input circuitry that allows the player to select between an all tube input signal path, or bypass the tube completely and use a FET driven solid-state input circuit. True tube overdrive can be added to either ‘clean’ signal path you choose, using an innovative balance control that allows the player to set the perfect blend of overdriven to clean signal. This ensures the player can add as much grunge or as little ‘tube warmth’ as needed while maintaining the definition and clarity of the clean tone. A solid-state power stage ensures ample pure clean power at the output.

Innovative tone-shaping controls like ‘Scoop’ and ‘Bass Resonance’ are standard on the XS800H as well as a compressor with user definable threshold and user defeatable output limiter. A five-band EQ, with semi-parametric mid, ensures the XS800H user can find any tone they need.

The unique variable contour Scoop function sweeps from a flat frequency response through a mid-frequency dip at 400 Hz. As you increase beyond the ½-way point on the control you begin to boost both the top and bottom end to your tone, in addition to further reducing the midrange level.

The unique Bass Resonance Control, when used with a high quality and responsive loudspeaker, like our XC808 allows the player to dial in the exact bass response from their rig that they want to hear, from a tight and punchy tone to a looser, more vintage bass sound. The Bass Resonance control actually controls the damping factor of the amplifier’s output stage, and allows the player to take full advantage of the tone of a loudspeaker enclosure.

The dual fan cooling system integrated into the XS800H completely negates the need for heavier heatsinks. Well placed intake/exhaust vents allow the two cooling fans to immediately draw all extraneous heat away from the amplifier ensuring the amplifier will not overheat even under the most extreme live conditions. Highest quality fans were chosen to keep noise to an absolute minimum. The lack of heavier heatsinks used in most amplifiers allows the weight of the XS800H to be reduced to a staggering low 25lbs, virtually unheard of for a 3 rackspace (3U) 800 watt bass amplifier. It is a full 4.5lbs lighter than it's little brother, the XS400H. A front panel tuner / mute switch is standard on the XS800H head. This mute kills the signal to the amplifier (and DI output) for tuning, and mutes the rig between sets.

Other professional features added to the XS800H include highly visible VU metering of the output signal, a front panel wet/dry control for the footswitchable tube drive, footswitchable effects return with front panel wet/dry blend control and a pre/post selectable XLR balanced DI output with ground lift. High power handling Speakon™ extension speaker cabinet outputs have been added in addition to the ¼-inch phono jacks commonly used on instrument amplifiers.

All metal chassis, quality component selection including glass epoxy circuit boards ensure long life and unmatched dependability. Like all Yorkville products, the XS800H is North American made and is covered in the United States and Canada by a two year unlimited warranty.*

*Warranty valid in Canada and the U.S. only

View High Resolution Image of the XS800H
Switchable tube/solid state (FET) input and tube overdrive (12AX7A preamp tube)
Footswitchable Tube Overdrive and Effects Loop
Innovative Wet/Dry blend on Tube Overdrive
Wet/Dry blend on the effects loop return
Five band EQ featuring a semi-parametric sweepable mid
Unique "Variable Contour" scoop function
Bass Resonance control adjusts the damping factor for either a 'loose' or 'tight' low end bass response
12 LED highly visible VU meter allows for monitoring of output levels from across the stage
Pre/Post EQ selectable XLR balanced Tube DI output
Speakon™ and 1/4" extension cabinet outputs
Front panel mute switch for silent tuning with 1/4" tuner out jack
Switchable Limiter at the output stage

BassMaster Bass Amps Series Overview

It all started with bass amplifiers. The first product Yorkville ever designed and built was an extremely reliable and affordable bass amp. For over thirty-five years, musicians have chosen Yorkville bass amplifiers for their great sound and durability. Working directly with players for over four decades, Yorkville engineers have learned about building rock solid bass amplification. Conceived by players, designed and built by Yorkville, we have had an incredibly successful run with The BassMaster Series.

In the past, BassMaster was known for their excellent sound, quality and value... Rugged and Reliable rock solid bottom end. From the most compact XM50C 50-watt combo to the rack-mountable XS800H 800 watt head, today’s BassMaster amplifiers reflect the latest in modern technology along with the highest quality and a legendary ‘retro’ look to suit players of all styles and abilities.

Now the BassMaster series has undergone a radical redesign. New cabinet designs, including a switch to birch plywood, a radical new finish, and re-engineered electronics mean we can offer new features and new models.

Years of experience have taught us that using MDF (medium density fiberboard) or particleboard for bass cabinets isn't conducive to a long rattle-free life or great bass tone, therefore all Yorkville bass cabinets are made with a reinforced solid plywood cabinet construction. A full metal grille protects the high quality custom designed speaker components used in all Yorkville Bass cabinets. Built for years of rugged use and unmatched dependability, we are so sure of our design and manufacturing prowess and our careful attention to detail that we cover all Yorkville extension speakers with a two year unlimited warranty.

BassMaster Bass Amps Series Characteristics
Simple Flexibility & Dependable Quality
Effective simplicity was the goal we set for our new line of amps. Active filtering circuits allow versatile tonal shaping with fewer knobs and switches. You can always get the sound you want quickly and easily from a Yorkville bass guitar amplifier.
Inside the chassis we use high-grade glass epoxy circuit boards, low noise metal film resistors, phone jacks with gold plated contacts. Outside you will find heavy gauge metal speaker grilles with a retro-fashioned texture look, 3/4” plywood construction and a new harder painted finish.Select models are available in an ultra tough black carpet covering similar to that used on select élite P.A. cabinets.

Add rigorous factory testing and our unbeatable 2-year (Even if you break it) Unlimited Transferable Warranty* and you can be sure you have what you need to reliably sound your best for years to come.

Warranty Information:

Yorkville Tech Support 716.297.2920 (2 year unlimited and transferable warranty) Yorkville Website You can reach the service departments at the following addresses: Canada & International Yorkville Sound 550 Granite Court Pickering, Ontario Canada L1W3Y8 Phone (905)837-8481 Fax (905)839-5776 Email: United States Yorkville Sound Inc. 4625 Witmer Industrial Estate Niagara Falls, NY USA 14305 Phone (716)297-2920 Fax (716)297-3689 Email:

Yorkville XS800H 800 W Bass Head; Yorkville XS 800H, XS800, XS800H, XS 800H, XS 800


This item has been discontinued.

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