AVALON M5 PURE CLASS A PREAMPLIFIER

Avalon microphone preamplifiers have been in use around the world since 1986.
All preamplifiers share the combined technologies of low ratio transformer
balanced inputs coupled with high-voltage cascade FET twin bipolar discrete class
A amplifiers.
 
M5 FEATURES
Pure Class A, 100% discrete design
Smooth musical detail and sonic excellence
Minimum audio signal path
High performance input transformer
Microphone and Hi-Z  inputs to +36dB
Very low noise -126dB
High headroom +30dB
Gain switched in 2dB steps to +64dB
DC coupled Pure Class A output
Large illuminated professional VU meter
Twin LED peak signal indicators
Regulated +48v phantom power supply
Low distortion less than 0.5% THD and IMD
Variable passive high pass (bass cut) filter
All signal routing with sealed silver relays
 
SONIC EXCELLENCE
The Avalon M5 Pure Class A microphone preamplifier is the most musical, low noise
full function preamplifier available today. Designed to optimize absolute signal integrity
and musical performance, the M5 combines an advanced transformer input stage with
twin high performance Class A cascode FET and bipolar discrete amplifiers for sonic
excellence unequaled by lesser designs. The M5 is ideal for vocal and acoustic
instruments,  active DI input for the direct recording of bass, guitars and keyboards. 
Features include state-of-the-art, balanced 100% discrete, Pure Class A signal amplifiers,
practical user features and rugged hardware designed to deliver true high performance
audio for many years.
DESIGNED FOR ULTIMATE MUSIC RECORDING
Avalon preamplifiers have been in use since 1986.  They have found their way into the
world's most famous lead vocalists recording sessions and studios and been featured
on thousands of the best selling (and sounding) albums and live performances.
MINIMUM SIGNAL PATH DESIGN
Avalon's advanced true symmetry design offers high-voltage, large headroom, extended
bandwidth and very low noise. The use of 100% discrete, Pure Class A signal amplifiers
give the serious music professional unlimited sonic character and a natural harmonic
detail that enhances the program material and becomes one with the music itself.
VOCALISTS DREAM MACHINE
The M5 microphone preamplifier is the first choice when you are looking to capture a full
bodied, dynamic, musical performance from the intimate depths within the artist.  The M5
will make your recordings musical masterpieces!
 
M5 SPECIFICATIONS
 
Circuit Topology:  Twin cascode FET and bipolar low level input signal stages.
High-voltage, 100% discrete, symmetrical high-bias Pure Class A amplifiers. 
Input Type and Load:  Superior transformer, balanced low-ratio 1500 ohm input load. 
Maximum Mic Level:  +36dB balanced XLR pin 2 hot (with -20dB passive attenuator). 
Maximum Instrument Level  +30dB balanced 600 ohms, DC coupled, discrete Class A. 
Input Attenuator:  -20dB resistive pre transformer primary, sealed silver relay. 
Phantom Power:  +48v regulated 50mA capability, sealed silver relay. 
High Pass Filter:  Passive, variable from 30Hz to 185Hz @ 6dB per octave,
sealed silver relay. 
Polarity Reverse:  Sealed silver relay on  microphone input. 
Gain Range Input:  +20dB to +64dB in 2dB steps. 
Maximum Output Level:  +30dB unbalanced 600 ohms, DC coupled, discrete
symmetrical Pure Class A. 
Output Type:  XLR connector, pin 2 hot (optional balanced JT-1 transformer). 
Noise EIN Unweighted:  -126dB 150 ohm. 
Noise 20kHz Unweighted:  -100dB 
Distortion THD, IMD:  0.05% nominal 
Frequency Response -3dB:  1Hz to 120kHz transformer limit. 
System Bandwidth:  DC to 1MHz 
Output Meter:  High quality, illuminated analog VU meter 0dB = +4dB. 
Peak Meter:  Bi-color LED's 0dB and +20dB peak detection circuit. 
M5 Dimensions:  8.5 x 3.5 x 12 in (216 x 88 x 305mm) half rack width. 
Weight:  15lbs (6.8kg) 
Dimensions of Shipping Carton:  24 x 21.5 x 7.5 in (610 x 546 x 190mm) 
Weight-Packed:  25lbs (11.4kg) includes B2T power supply and cables. 
AC power supply B2T:  External toroidal 100V to 240V, 50-60Hz selectable,
150 watts maximum. 
Cables:  1 x 8ft 4 pin ac cable, 1 x 8ft standard IEC cable included. 
Dimensions:  5 x 7 x 3.25 in (127 x 177 x 83mm) 
Weight:  7lbs (3.2kg) 
Rack mount kit (1) RM-1:  Single M5 19 inch rack mount kit (holds one half rack unit). 
Rack mount kit (2) RM-2:  Dual M5 19 inch rack mount kit (holds two half rack units). 

Applications

Console input extending for both Digital and Analog mixing
consoles in Studio, Live and Broadcast
Mic Pre-amps for ADAT/ Hard Disk/ Multitrack Recording
 
Innovation
If you love your compact Digital (or Analog) mixing console, but wish it had
more microphone inputs, ARX has the solution ? the 8 Pre: eight channels
of superb sounding Microphone Pre-amps in a compact 1 RU chassis.
The 8 Pre is the ideal console extender for those times when you need more
microphone inputs. Now you can put those unused line inputs to good use,
and who knows - the 8 Pre pre-amps sound so good that you?ll probably end
up using them all the time instead of the ones that came with your mixer!
Superb Audio Quality
The 8 Pre?s ultra low noise figures come from extensive use of premium
components plus care and attention to board design and layout. The result is
superb, transparent audio quality and the headroom to handle anything that a
mic can throw at it.
Gain is adjustable from 20 db through to 60 dB via a trim control on the front
panel, plus we?ve included a ?20dB Pad switch to tame the hottest condenser
mic output if required. The Clip status LED lights up 1 dB before the onset of
clipping, just to warn you you?re getting close.Phantom power is switchable in
banks of four channels: 1 through 4, 5 through 8. A Phase reverse switch is also
provided on each pre-amp channel to eliminate any close miking problems.
In short, the ARX 8 Pre is the mic Pre-amp that you?ll wish the console manufacturer
had used. It provides a unique solution to today?s multiple Mic Pre-amp requirements.

T E C H N I C A L S P E C I F I C A T I O N S
Input Gain 20dB to 60dB
Input Pad ?20dB
Input Impedance 4 KOhm
Input Headroom +23dB
Output Impedance 300 Ohm
Output Level (Max) +23dB
Frequency Response 20Hz ? 20KHz ±0.2 dB
Signal to Noise ratio (Gain set @ 20 dB)
?93dB Unweighted, ?99dB ?A? weighted
Distortion @ Unity Gain .004%, 20 Hz ? 10 KHz
Dynamic Range 116 dB
Phantom Power 48 VDC
Input Connectors Balanced XLR
Output Connectors Balanced TRS jack
Clip Indicator Illuminates 1 dB prior to clipping
Power Requirements 100/120 V AC, 220/240 V AC
Weight 5 lbs/2.2 Kg
Dimensions 19“W x 1?“H x 6“D, 482 x 44 x 155mm

Mic Inputs
• Frequency response at minimum gain (0dB): -0.35dB at 20Hz and –3dB at 122kHz
• Frequency response at maximum gain (60dB): –2.5dB at 20Hz and –3dB 103kHz
• Gain range: 0dB to +60dB in 10dB steps, plus 0dB to +20dB continuously variable trim
• Maximum headroom: +7.4dBu
• THD+N: 0.0009% (measured at 1kHz -20dBu input signal, at 30dB gain setting, with a 20Hz/22kHz bandpass filter)
• Noise EIN: -126dB (measured at 60dB of gain with 150Ω termination and 20Hz/22kHz bandpass filter)
• Noise at main output with unity gain: -98dBu (measured with a 20Hz/22kHz bandpass filter)
• SNR: 123dB (relative to max output 25dBu)
• SNR: 120dB (relative to 0dBFS (+22dBu)
• CMRR: 88dB.
• Input Impedance, variable: 600Ω, 1400Ω, 2400Ω, 6800Ω

Line Inputs
• Frequency Response at unity gain (0dB): -0.3dB at 20Hz and –3dB at 94kHz
• Gain range: -20dB to +10dB in 10dB steps, plus 0dB to +20dB continuously variable trim
• Maximum headroom: +25.4dBu
• THD+N: 0.002% (measured with +4dBu input signal, 0dB gain setting, with a 20Hz/22kHz bandpass filter)
• Noise at main output with unity gain: -91dBu (measured with a 20Hz/22kHz bandpass filter)
• SNR: 116dB (relative to max output 25dBu)
• SNR: 113dB (relative to 0dBFS +22dBu). Input Impedance: 10kΩ

Instrument Inputs
• Frequency Response at +10dB gain: -0.2dB at 20Hz and 0dB at 200kHz
• Frequency Response at +40dB gain: -3dB at 20Hz and –3dB at 38.4kHz
• Gain range: +10dB to +40dB continuously variable
• Maximum headroom: +11.5dBu
• THD+N: 0.006% (measured with –20dBu input signal, at minimum gain (+10dB), with a 20Hz/22kHz bandpass filter)
• Noise at main output with minimum gain (+10dB): -95dBu (measured with a 20Hz/22kHz bandpass filter)
• Input Impedance = >1MΩ

High Pass Filter
• Roll off = 18dB per octave 3 pole filter
• Frequency range: 16Hz to 420Hz (continuously variable, measured at the 3dB down point)

Meters
• 6 LED meter is calibrated 0dBFS = +22dBu (the maximum level which can be correctly converted by the optional internal A/D converter before overload occurs). The meter calibration points are as follows:

Meter panel calibration value in dBFS / Equivalent dBu value
0dBFS / +22dBu
-2dBFS / +20dBu
-6dBFS / +16dBu
-12dBFS / +10dBu
-18dBFS / +4dBu
-42dBFS / -20dBu



Front and rear connectivity

Analogue Channel Inputs (Inputs 1-4)
• 4 instrument 1⁄4” TS jack inputs on front panel
• 4 microphone XLR inputs on rear panel
• 4 line 1⁄4” TRS jacks on rear panel
• 4 insert return 1⁄4” TRS jacks on rear panel
• 4 ADC XLR inputs on rear panel

Analogue Audio Outputs (Outputs 1-4)
• 4 line XLR outputs on rear panel
• 4 insert send 1⁄4” TRS jacks on rear panel

Other I/O
• IEC power input connector 100Vac – 240Vac

Front Panel Indicators
• 8 output meters, 6 segment
• 4 30-60 mic gain range selection indicator
• 4 +48V phantom power indicator
• 4 Phase indicator
• 4 Insert In indicator
• 4 Filter In indicator
• 4 Input selection indicators (Mic, Line, Inst)
• 4 Z In microphone input impedance selection indicators (Low, ISA110, Med, High) Clock select indicators (44.1, 48, 88.2, 96, 176.4, 192)
• Ext clock indicators (Lock, Word clock, 256X)

Weight
5.5kg
12.2lbs

Dimensions (W x H x D)
480mm (W) x 88mm (H) x 280mm (D)
19" (W) x 3.5" (H) x 11" (D)

• 1 microphone, XLR (bal.) or 6.3 mm jack (unbal.)
• Gain control, 10 steps (6-50 dB)
• Phantom power can be switched on
• Clip LED
• 1 line output, XLR (bal.) or 6.3 mm (unbal.)
• Operation via supplied power unit

Behringer MIC-2200 2-Channel Tube Microphone Preamplifier-Line Driver-DI Box

The MIC2200 is the ideal extension to your console, MIDI setup or hard disk recording system. Its integrated parametric EQ?s give you extra sound-shaping power, while its built-in tube adds warmth and transparency to your signal. In addition, the ULTRAGAIN PRO features direct injection and level conversion functionality.