Fuchs Audio Technology CASINO Series User manual


CASINO SERIES
AMPLIFIERS
Operations Manual
for
Blackjack 21-II
Full House 50 and Wild Card
100,(head/combo)
Fuchs Audio Technology
407 Getty Ave, Clifton, NJ 07011
USA
[phone] (fax) 973-772-4460
Website: www.fuchsaudiotechnology.com
Email: [e-mail]
 2000-2021 Fuchs Audio Technology. All
rights reserved.
12-01-2021-AMF Rev-1.1


A Note from Andy,
First of all, Thank You for purchasing a Fuchs Audio Technologyamplifier!
Due to player demand, Andy Fuchs redesigned the popular Casino® series amps into agreat
new series of amps, to provide our sought-after Fuchs ODS® tone at a lower price. And like all
our other amps and pedals, each Casino Series amplifier is precision craftedby the team at
Fuchs Audio to the same high standards of excellence found in all Fuchsproducts, regardless of
price. With over two decades experience in the service, manufacturing, and design of tube
audio/music equipment, we at Fuchs Audio are extremely proud of the quality and tremendous
musicality of this new series.
Please read this manual carefully. Although these amps were created to be simple amplifiers
to operate they will perform to fullest by your full understanding of thecontents of this manual.
Feel free to call or e-mail us (we prefer emails!) with comments & questions about youramp,
or just to find out what’s new here at Fuchs Audio.
Lastly, I recommend checking out our website: www.fuchsaudio.com, for product/user
updates, cool links and other info benefiting our customers.
Welcome to the Fuchs family,
Andy Fuchs
President
Fuchs Audio Technology LLC 
Fuchs Audio Technology
407 Getty Ave, Clifton, NJ 07011
[phone] (fax) 973-772-4460
Website: www.fuchsaudiotechnology.com
Email: [e-mail]
(“Fuchs Audio Technology” & all product names are registered trademarks of Fuchs Audio Technology)


Table of Contents (by section)
1) Introduction to the Fuchs Audio Casino series amplifier
2) Please Read before powering up your amp
3) Diagrams- FRONT/REAR panels, Tube bias diagram
4) Front Panel Controls, Inputs & Functions
5) Rear Panel Controls, Inputs/Outputs
6) Technical Information, Service Information, Tube Biasing
7) Warranty/repair information & mail-in warranty form
 2000-2021 Fuchs Audio Technology. All rights reserved.

1. INTRODUCTION TO THE FUCHS AUDIO CASINO SERIES™ AMPLIFIERS
Having become Fuchs Audio Technology’s bestselling amplifiers, the Casino® Series brings
the premium build quality and breathtaking tones people expect of Fuchs products into
more affordable price range. The Casino® Series are based on a three 12AX7 preamp
stage, and each model has its own unique power stage. Unlike other amps in this price
range, the Casino® Series features two channels, a digital reverb, gain boost, and a feature
set unlike any other boutique “D-style” amp in this price range. They feature a full
complement of extremely flexible tone controls. A surprising amount of clean headroom
is available before the output stage begins distorting with a sweet yet cutting rock edge.
The Casino® Series boasts all the most sought-after Fuchs® amplifier features, including
an aircraft grade aluminum chassis, our proven PC board and hand wired construction
and top-grade transformers. On these models the preamp tubes and power supply
circuitry are on the PC board, while the power tubes and transformers are mounted on
the chassis for stability and performance. A detachable power cord is standard. And
through Fuchs® single point grounding, the amp is quiet and free of hum at all operating
levels.
A single instrument input and 3 speaker outputs for 4-8-16 ohms are provided. An effects
patch jack is provided as is a dual footswitch jack for channel and gain boost via a dual LED
footswitch.
Features:
♦¾” solid premium plywood cabinet with durable Tolex covering.
♦Anodized aluminum chassis with long lasting silk-screened panel
labeling
♦Heavy duty Cliff brand jacks. Solid metal-shaft Alpha potentiometers.
♦Ultra-long-life fuse-lamp pilot lamp and heavy-duty AC power and standby
switches.
♦Simple user adjustable fixed output tube bias.
Specifications:
Amplifier Model
Output Wattage/Tube Complement
Input
Impedance
Weight & Dimensions
Blackjack 21 MKII
Head®
20 watts into 4-8-16 ohms, 2x6V6 power
tubes
1Meg.
24 lb
18 7/8 * 11 3/8 * 9 3/4
Blackjack 21 MKII®
1x12 Combo
20 watts into 4-8-16 ohms, 2x6V6 power
tubes
1Meg.
35 lb,
24 3/8 * 11 ¾ *22 7/8
Full House 50®
Head
50 watts into 4-8-16 ohms, 2 x 6L6 power
tubes
1Meg.
29 lb,
18 7/8 * 11 3/8 * 9 3/4
Full House 50® 1x12
Combo
50 watts into 4-8-16 ohms, 2 x 6L6 power
tubes
1Meg.
40 lb,
24 3/8 * 11 ¾ *22 7/8
Wild Card 100®
Head
100 watts into 4-8-16 ohms s, 4 x 6L6
power tubes
1Meg.
32 lb
18 7/8 * 11 3/8 * 9 3/4
Wild Card 100®
1x12 Combo
100 watts into 4-8-16 ohms, 4 x 6L6
power tubes
1Meg.
44 lb,
24 3/8 * 11 ¾ *22 7/8

2. Please Read Before Powering Up Your Amplifier!
3Please see Panel Diagrams in Section 3 for assistance.
1) Inspect to make sure power & pre-amp tubes are intact & snuggly seated in their
sockets.
2) Make certain a speaker (load) is plugged into speaker input jack on the back of
the amplifier. Failure to have a speaker connected to the amp will result in
damage to the output tubes! Your amp is supplied with 4,8 and 16 ohm speaker
output jacks, select the one which matches your speaker(s) impedance.
3) Reduce Front panel GAIN controls to moderate level.
4) Install instrument cable from guitar into front panel INPUT
5) Be sure both POWER switch (front panel) is in DOWN (0ff) position and standby
is in off (down) position.
6) Install power cord to amplifier (AC POWER IN) and to appropriate AC power
source.
7) POWER UP amplifier by: 1) flipping POWER switch UP. Allow at least 30 seconds
to 1 minute for tubes to heat up. Then switch amp to operate mode via standby
switch.
8) The Amplifier is now fully on and ready to use. Feel free to adjust all controls as
you see fit.
9) Provide adequate and unimpeded ventilation.
10) Do not expose the unit to drips or splashes.
11) Do not to place liquids on the unit.
12) Properly ground the unit (i.e. make sure the outlet used is grounded, and ground
is not defeated between the outlet and unit).

3. DIAGRAMS OF FRONT & REAR PANELS, TUBE BIAS DIAGRAM
Front Panel
Rear Panel
Tube Bias Diagram

Biasing Information for Various Models:
Refer to diagram above for location of bias trimmers and test points
SEE WARNINGS IN SECTION 6 OF THIS MANUAL BEFORE BIASING!
Blackjack-21: Set for .02 volts on each test point (20-Ma per tube Class-AB-1)
Full-House-50: Set for .036 volts on each test point (36 ma per tube Class AB-1)
Wild Card 100: Set for .036 volts on each test point (36 ma per tube Class AB-1)
PREAMP TUBES AND THEIR FUNCTIONS:
V-1 12AX7 (nearest to input jack). Main input preamp, first clean and overdrive preamp
(premium tube recommended)
V-2 12AX7 (middle tube) Overdrive only preamp.
V-3 12AT7 Phase inverter/driver tube
4. FRONT PANEL CONTROLS, INPUTS & THEIR FUNCTIONS
Input Jack:
Input jack is a 1/4" phone plug, designed for 1-Meg impedance, guitar-level signal. This
input will readily accept pedals/effects without any loss in performance. Pedals/effects
input is also inserted to this input in series with your guitar.
Clean Gain Control:
The gain control sets the overall gain/volume for the amplifier in the clean (channel-1)
mode. Adjust to volume /tone taste.
High Control:
Adjust the high control to taste, it controls adjusts the high frequency spectrum of your
amplifier.
Mid Control:
Adjust the Mid control to taste, it controls adjusts the mid frequency spectrum of your
amplifier.
Low Control:
Adjust the Low control to taste, it adjusts the low frequency spectrum of your amplifier.

OD-Gain:
The OD-gain control sets the amount of drive in the gain channel. This channel is
accessed by the left footswitch button, or by pulling the Overdrive Master control knob
out. This control will adjust how much gain and distortion you will have in channel-2.
OD-Master:
The OD-Master controls the volume of the amp in channel-2 (overdrive) mode. The
Overdrive gain (above) sets the amount of distortion, and the Overdrive master sets the
volume at which the drive channel operates.
OD-tone:
The OD tone control is a simple high cut control which allows you to go from “woman
tone” (full counter clockwise), to D-style (center 30% range), to rock/English tones (full
clockwise).
Reverb Level:
The Reverb level control adjusts the amount of reverb return to the amp.
Reverb Decay:
The Reverb decay adjusts the time it takes for the reverb signal to decay.
Counterclockwise is the shortest decay, and turning all the way clockwise increases the
decay time.
5. REAR PANEL CONTROLS, INPUTS/OUTPUTS
AC power cord input:
Using a standard IEC power cord. Connect to AC POWER IN on the amplifier and to AC
power source. Please note the voltage on the chassis, and make sure you are supplying
the correct AC voltage to the unit. Damage from incorrect voltages is not covered by
warranty.
AC power Fuse:
This fuse protects the amplifier if any malfunction occurs. Use ONLY the stock fuse
rating as supplied by factory and shown on the rear panel for the voltage and current in
your location.
Speaker outputs:
4, 8, 16-ohm outputs. Use the same impedance as the speaker you are using for
maximum power and performance and use only one speaker output at a time.

Standby/Play switch:
Up is play mode. When amp is not being used, but being warmed up, place amp into
standby mode.
Effects Loop Patch jack:
This is a stereo ¼”. The tip is the return to the power amp. The ring is the send from the
preamp. This may be used with an outboard effect loop like the Plush Tube FX loop, or

various other aftermarket devices for this purpose. Depending on the outboard unit you
are using, an effects loop device may not be needed. You can try any unit you like and
see if the tone and performance is acceptable to you without damage to the unit.
6. BIASING THE AMPLIFIER POWER TUBES, WARNINGS AND TECHNICAL INFO
The circuit board is shown in Section 4 of the manual should be viewed as having
the chassis sitting on its transformers, and front panel facing the user.
!!! WARNING – ELECTRICAL SHOCK HAZARD!!!
THERE ARE EXPOSED POTENTIALLY DEADLY HIGH-VOLTAGES IN THIS AMPLIFIER,
EVEN WITH THE AMPLIFIER SHUT-OFF!
If you are not familiar with servicing tube amplifiers and/or high voltages, do not
attempt to remove the chassis from its cabinet or to attempt to service this
amplifier. Do not attempt to service, repair or conduct tube biasing on your
amplifier unless you are qualified to do so. Refer servicing to the factory or to
someone with experience servicing these types of amplifiers.
DISCLAIMER: Fuchs Audio Technology, LLC®, its subsidiaries, affiliates and/or
agents shall have no responsibility for, nor shall they be held liable for any harm
of any kind to any person/s or property (including damage to this amplifier) as a
result of improper and/or unauthorized service, repair or internal adjustments
made to this amplifier.
FCC COMPLIANCE STATEMENT: This equipment has been tested and
found to comply with the limits of Part 15 of the FCC Rules. These limits
are designed to provide reasonable protection against
harmful interference in a residential installation. This equipment generates,
uses and can radiate radio frequency energy and, if not installed and used
in accordance with the instructions, may cause harmful interference to
radio communications. However, there is no guarantee that interference
will not occur in a particular installation. If this equipment does cause
harmful interference to radio or television reception, which can be
determined by turning the equipment off and on, the user is encouraged to
try to correct the interference by one or more of the following measures:
•Reorient or relocate the receiving antenna. •Increase the separation
between the equipment and receiver. •Connect the equipment into an outlet
on a circuit different from that to which the receiver is connected. •Consult
the dealer or an experienced radio/TV technician for help.

DISCLAIMERS:
ΔRead, retain, and follow all instructions. Heed all warnings.
Δ Only connect the power supply cord to an earth grounded AC receptacle in
accordance with the voltage and frequency ratings listed under INPUT POWER
on the rear panel of this product.
ΔWARNING: To prevent damage, fire or shock hazard, do not expose this unit
to rain or moisture.
Δ Unplug the power supply cord before cleaning the unit exterior (use a damp
cloth only). Wait until the unit is completely dry before reconnecting it to power.
ΔMaintain at least 6 inches (15.25 cm) of unobstructed air space behind the unit
to allow for proper ventilation and cooling of the unit.
ΔThis product should be located away from heat sources such as radiators, heat
registers, or other products that produce heat.
Δ This product may be equipped with a polarized plug (one blade wider than the
other). This is a safety feature. If you are unable to insert the plug into the outlet,
contact an electrician to replace your obsolete outlet. Do not defeat the safety
purpose of this plug.
Δ Protect the power supply cord from being pinched, cut or abraded.
ΔThis product should only be used with a cart or stand that is recommended by
the manufacturer.
Δ The power supply cord of this product should be unplugged from the outlet
when left unused for a long period of time, or during electrical storms.
ΔThis product should be serviced by qualified service personnel when: the
power supply cord or the plug has been damaged; or objects have fallen, or
liquid has been spilled onto the product; or the product has been exposed to rain;
or the product does not appear to operate normally or exhibits a marked change
in performance; or the product has been dropped, or the enclosure
damaged.
ΔDo not drip nor splash liquids, nor place liquid filled containers on the unit.

ΔCAUTION: No user serviceable parts inside, refer servicing to qualified
personnel only.
Δ Fuchs ® amplifiers and loudspeaker systems are capable of producing very
high sound pressure levels which may cause temporary or permanent hearing
damage. Use care when setting and adjusting volume levels during use.


7. Warranty Information
Keep the information on this page for your records.
Fuchs Audio Technology
407 Getty Ave, Clifton, NJ 07011
[phone] (fax) 973-772-4460
Website: www.fuchsaudiotechnology.com
Email: [e-mail]
The Fuchs Audio Technology

Amplifier Warranty
Fuchs Audio Technologyguarantees our products to be free from defective
workmanship or material failure for a period of FIVE years (tubes excluded)from date of new
purchase to the original purchaser. This excludes tubes, which are covered for 90 days by Fuchs,
and whatever period the manufacturer of the tube provides. This does not apply to Fuchs
amplifiers that have been tampered with, damaged by shipping carriers, reverse engineered, or
modified. Your warranty form/information must be returned to Fuchs Audio Technology
within 30 days of purchase, or your warranty will not be in effect. Fuchs Audio Technology
reserves the right to suspend or terminate the above warranty at our sole discretion, should
damage from any of the above limitations and or exclusions be detected upon examination.
FUCHS MODEL :
SERIAL NUMBER:
OPTIONS INCLUDED:


WARRANTY REGISTRATION FORM
This completed form must be returned to Fuchs Audio Technology within 30 days of purchase along
with a copy of your receipt from your authorized dealer.
Please fill in all requested information on this form so we may register you for future warranty repairs
or future upgrades, should they become available.
Purchasers Name:
Address:
City: State: Zip: Country:
Phone Number: E-Mail address:
Model: Serial Number:
Date of Purchase:
Dealer Name:
Comments:
Please return this form to:
Fuchs Audio Technology
407 Getty Ave, Clifton, NJ 07015
[phone] (fax) 973-772-4460
Website: www.fuchsaudiotechnology.com
Email: [e-mail]

All Fuchs Products are Manufactured in the United States
from Domestically andInternationally Sourced Components.
Fuchs Audio Technology
407 Getty Ave, Clifton, NJ 07011
[phone] (fax) 973-772-4460
Website: www.fuchsaudiotechnology.comEmail: [e-mail]
All Fuchs Products are Distributed in the EU through Audiowerk Distribution andLogistics.
AUDIOWERK e.Kfm.| Schulstrasse 30 | 55595 Hargesheim - Germany |
Tel +49 (0) 671 - 2135420 | Fax +49 (0) 671 - 2135419
www.audiowerk.eu | [e-mail]
Fuchs Audio Technology.  2000-2021
All rights reserved.