Mitchell & Johnson 800 SERIES User guide

800 SERIES
PRE & POWER AMPLIFIER
OWNERS HANDBOOK
Made in the UKMade in the UKMade in the UKMade in the UK

2
Index
Index.............................................................................................................................................. 2
Warranty…………………………………………………………………………………………...……… 3
Declaration of Conformity........................................................................................................... 4
Introduction, Environmental, WEEE, Made in the U ............................................................... 5
Installation & Safety Advice........................................................................................................ 6
PRE-AMPLIFIER INSTRUCTIONS…………………………………………………………………….. 7
Rear Panel..................................................................................................................................... 8
Front Panel…………………………………………………………………………………………..…… 9
Overview and Input Connections ………………………………………………………………….... 10
Balanced Connections………………………………………………………...…………………….… 11
Output Connections / Cables ………………………………………………………………………... 12
Front Panel Operation…………………………………………………………………………………. 13
Remote Control…………………………………………………………………………………………. 14
Setup Menu Options.......................................................................................................... 15 to 18
USB Audio…….…………….…………………………………………...……………..……….... 19 to 20
Pre-Amplifier Specifications ...................................................................................................... 21
POWER AMPLIFIER INSTRUCTIONS……………………………………………………….……….. 22
Rear Panel………………………………………………………………………………………..…….… 23
Front Panel……………………………………………………………………………………………….. 24
Overview and Input Connections………………………………………...………………………….. 25
Output Connections……………………………………………………………………………………. 26
Power Amplifier Specifications………………………….…………………………………………… 27
Rear cover and Contact details ……………………………………………………………………….28

3
PLEASE RETAIN YOUR ORIGINAL PURCHASE RECEIPT AND
PLACE IT HERE FOR SAFEKEEPING
YOUR WARRANTY PERIOD WILL COMMENCE FROM THE
DATE OF PURCHASE SHOWN ON THE RECEIPT
Warranty

4
EC Declaration of Conformity
In accordance with EN ISO 17070-1:2004
We itchell & Johnson electronics ltd of Severn Farm Industrial Estate Welshpool Powys UK in accordance with the following Directive(s): 2006/95/EC The Low Voltage Directive 2004/108/EC The Electromagnetic Compatibility Directive hereby declare that: Equipment: itchell & Johnson 800 preamplifier and 815 power amplifier are in conformity with the applicable requirements of the following standards Standard. No. Name International Equivalents BS EN60065; 2002 Electrical Safety Requirements EN60065; 2002 / IEC60065; 2001 BS EN 55020; 2002 E C Immunity EN55020; 2002 / CISPR 20; 2002 BS EN 55013; 2001 E C Emissions EN55013; 2001 / CISPR 12; 2001 BS EN 61000-3-2; 2001 E C Limits for Harmonic Emissions EN61000-3-2; 2000 / IEC61000-3-2; 2000 BS EN 61000-3-3; 1995 E C Limits for Voltage Fluctuations EN61000-3-3; 1995 / IEC61000-3-3; 1994 I hereby declare that the equipment named above has been designed to comply with the relevant sections of the above referenced specifications. The unit complies with all applicable Essential Requirements of the Directives and Standards. Signed by: .................................................................................................................................................
Name: Nia Davies
Position: anaging Director Done at: itchell & Johnson Electronics Ltd. On: 02/08/2017 17

5
Introduction
Congr tul tions on your purch se of Mitchell & Johnson 800 series products.
The Mitchell & Johnson r nge h s been p inst kingly engineered in the United Kingdom
to offer cl ss le ding perform nce.
Users should re d nd follow this instruction m nu l, p ying p rticul r ttention to the user
inst ll tion nd s fety dvice sections.
This m nu l h s been written to en ble you to chieve the very best perform nce nd m ximum
listening ple sure from your investment.
We wish you m ny ye rs of ple sur ble listening.
With best reg rds, the Mitchell & Johnson te m
Environmental Issues
Although Mitchell & Johnson electronics oper te in st ndby mode s opposed to being fully
switched off, the power dr in h s been optimised to negligible level. Contr ry to popul r udio-
phile pr ctice, we do not recommend le ving our power mplifiers perm nently powered.
All Mitchell & Johnson mplifiers h ve been designed to tt in full oper tion l specific tions nd
sound qu lity within few minutes of switch-on.
Mitchell & Johnson oper tes 100% recycling progr m. All w ste m teri ls gener ted s p rt of
the m nuf cturing process t Mitchell & Johnson re recycled vi licensed speci list comp ny.
WEEE Scheme
Disposal of Electronic Equipment in the European Union and other countries with
collection procedures:
The wheelie bin symbol on this product indic tes th t it sh ll not be tre ted s household w ste. It
should be disposed of vi collection point for the recycling of electric l nd electronic equip-
ment.
Made in the U
Your Mitchell & Johnson 800 series products were entirely designed nd m nuf ctured in the UK.

6
VERY IMPORTANT
Before connecting your new Mitchell & Johnson units to the rest of your system, ple se
ensure ll required input/output c bles re connected BEFORE inserting the m ins power
le d nd powering for the first time.
User installation and safety advice
Ple se ensure th t the m ins volt ge of your new Mitchell & Johnson devices re correct
for your region. The setting is displ yed on l bel next to the m ins power inlet.
The m ins volt ge setting is not user djust ble, therefore the product must be returned to
the de ler/m nuf cturer if ny ch nges re required.
Ensure the m ins supply is switched off t the w ll socket, or unplugged before inst lling
or moving the units.
Do not use ne r w ter, for ex mple do not pl ce potted pl nt on top of the units or llow
drinks to be pl ced ne r the units. If liquid is spilt in to the c binet, remove the m ins le ds
from the w ll immedi tely.
The products should then be returned to your de ler for s fety testing before re-use.
F ilure to do so m y result in electric shock or even fire!
Do not use the units in d mp conditions, for ex mple, outside of the house.
In the event of n electric l storm, remove the m ins power le ds from the w ll outlet.
Keep w y from direct sunlight nd other he t sources nd ensure dequ te ventil tion
round the products to m int in proper cooling.
Units MUST NOT be st cked directly on top of e ch other.
Never ttempt to open the c binets. There re no user service ble p rts inside nd doing
so will inv lid te the m nuf cturers w rr nty.
C re should be t ken to ensure there is no possibility of short circuit behind the units when
in use, for ex mple, met l fr med hi-fi units m y be h z rd.

7
800 SERIES
PRE-AMPLIFIER
INSTRUCTIONS

8
Power Inlet and fuse ratings
Ple se ensure th t the specific tion indi-
c ted dj cent to the connector is correct
for your re .
This will either be 230VAC or 115VAC.
Digital Inputs
USB Asynchronous
3 x Optic l
3 X Co-Axi l
Pre-Amp unbalanced Outputs
Outputs 1 nd 2 re for connecting
n mplifier.
T pe out is not volume controlled for
recording.
Sub out is for supplying volume
controlled feed to n ctive
subwoofer system.
Analogue Unbalanced Inputs
L belled 1 to 4.
The displ yed n me for e ch
input c n be edited in the setup
menu.
Phono input
Select ble MM/MC
In user setup menu.
Rear Panel
Phono Ground
Connect turnt ble
Ground here if fitted.
Balanced inputs
Devices such s b l nced output
CD pl yers c n be connected here.
Connections comply with Europe n
st nd rd pin pol rity wiring
Serial Number &
Safety Information
Balanced outputs
For connection to n mplifier with
b l nced inputs
Connections comply with Europe n
st nd rd pin pol rity wiring
12 volt power links
Used to link units together
for synchronised on/off

9
Input selector/Power on/off
Rot ting clockwise or nticlock-
wise will cycle through the list of
v il ble inputs.
Unused inputs c n be suspended
from the list nd required inputs
c n be re-n med in the setup
menu. See p ge 13
Information Display
Volume setting nd selected input
displ yed by def ult.
Menu selection inform tion is
displ yed when in MENU mode.
Volume nob/Menu select
Volume knob rot tes in the
convention l w y to regul te
the mplifiers volume. The
volume level is shown on the
m in displ y.
Pushing the volume knob will
en ble the menu p ge for cus-
tomising the user settings.
See p ge 15 for det ils.
Headphones
6.35mm output socket for
integr ted he dphone
mplifier.
He dphone imped nce
should be minimum of
32 Ohms.
Front Panel
Infra red receiver
Both the volume knob nd the Source knob incorpor te push switch to ch nge functions.
Pushing nd holding the volume knob for 5 seconds will toggle in nd out of the setup menu.
Pushing the Input knob will ch nge the settings in e ch setup sub menu.
Standby light
2 way power switch
See p ge13

10
Mitchell & Johnson 800 series pre-amplifier Overview
The Mitchell & Johnson 800 pre- mplifier is cl ss le ding product, c p ble of superb perform nce
t the he rt of n udiophile stereo system. It incorpor tes subst nti l number of connections for
both n logue nd digit l sources.
In ll there re 13 potenti l source connections.
Connections
Input Connections
Analogue 1-4 > The Mitchell & Johnson 800 pre- mplifiers n logue inputs should only be con-
nected to the n logue outputs (usu lly m rked left/right nd colour coded white/red) from source
component.
Balanced > High end sources often fe ture this kind of connection. It does not offer ny inherent
dv nt ge over unb l nced connections in short c bles but it does offer better sign l to noise nd
hum rejection in long c bles where the components re sited some dist nce p rt.
Phono > This is where turnt ble should be connected which dos NOT h ve n integr ted phono
st ge pre- mplifier. The Mitchell & Johnson 800 pre- mplifiers phono st ge c n be used with either
Moving M gnet or Moving Coil c rtridge. The relev nt setting is ccessible in the setup menu.
Digital
Optical 1-3 > Optic l connections re commonly used on televisions, g mes m chines nd s tellite
television receivers to tr nsfer digit l udio inform tion from one component to nother.
The m in benefit of optic l connections is th t there is no direct e rth connection between units,
thereby voiding induced hum from ground loops or switch mode power supply noise being p ssed
from one device to nother.
Co-Axial 1-3 > M ny CD pl yers, stre ming network pl yers nd extern l processors use Co-Axi l
wired connections. Theoretic lly the qu lity is superior to optic l with less jitter induced in the tr ns-
mission ch in, but in pr ctice it prob bly m kes little difference.
USB > Computer b sed music pl yb ck, if from convention l computer or medi server (just
computer hidden in box) is gener lly vi USB connection.
The Mitchell & Johnson 800 pre- mplifier h s n synchronous connection using n XMOS USB
interf ce chip. This does not require driver with Apple, Linux or Android b sed systems. However,
Microsoft devices will require suit ble driver nd setup for the interf ce to work. See p ge 19