m808a valve preamplifier

Mystery Magicians M808A Microphone Preamplifier  and M808APB Patchbay Panel

Now Available At Vintage King Pro Audio


Some of The Features Of The M808A At A Glance!

Custom Manufactured Bakelite VU Meters With Traditional Ballistics
Mystery Magicians Company M808A Custom Made VU Meter
Mystery Magicians Company M808A Tube Microphone Preamp NOS Russian Tubes
Mystery Magicians Company Custom Made Audio Mic Input and Output Transformers
Custom Hand Wound Input and Output Audio Transformers
New  Matched Valves For Each Unit Manufactured
Custom Manufactured GR Style Bakelite Knobs
Mystery Magicians Company M808A Tube Microphone Preamp Bakelite Knobs
Mystery Magicians Company M808A Tube Microphone Preamp Rear Panel Input and Outpus I/O
Channel Strips With MIC IN, LINE IN/OUT, DI, and Inserts
Mystery Magicians Company M808A Tube Microphone Preamp Active Filter EQ Section
Active True Bypass FILTER Section Featuring Useful Filter Freq.
Mystery Magicians M808A Microphone Preamplifier Inside shot
Modular Design Throughout The Unit
Switchcraft & Neutrik Audio Connectors
Metal Film Resistors + Foil & Film Audio Grade Capacitors Throughout
Hermetically Sealed Input & Output Transformers in MuMetal Shielding Cans
Mystery Magicians Company Custom Made Audio Mic Input and Output Transformers In MuMetal
Internal Switch To Toggle Between ECC82 or Premium Grade 6350 ★★★★★ Output Tube
M808A Tube Toggle Selector
Mystery Magicians M808A Microphone Preamplifier Frequency Response
High Gain & Exceptional Flat Frequency Response 10Hz-25kHz
Optional  M808APB Accessory Patchbay for Dual-Channel Units.
Mystery Magicians M808A Microphone Preamplifier  and M808APB Patchbay Panel

  • Custom Designed And Manufactured Bakelite VU Meters With Traditional Ballistics

  • Custom Designed Hand Wound Input & Output Transformers Hermetically Potted in MuMetal Casing

  • Class A Operation Throughout The Signal Chain

  • Up to 80dB Of Gain

  • Channel Strip Design With MIC IN, LINE IN/OUT, DI, And Effect Inserts

  • Low Noise Design Topology

  • Custom Manufactured GR Style Bakelite Knobs From Original Moulds

  • New Old Stock Matched Valves For Each Unit Manufactured

  • Switchcraft® & Neutrik® Audio Connectors

  • Active True Bypassable FILTER Section Featuring 4 Useful HPF & LPF Filter Frequencies of 50Hz, 150Hz, 5kHz, 2kHz @ −6 dB per octave (−20 dB per decade) Butterworth 1st order.

  • Internal Switch To Toggle Between ECC82 Or Premium Grade 6350 ★★★★★ Output Tube *See Options Below

  • Metal Film Resistors, Foil & Film Capacitors, Rubycon® & NIPPON Chemi-Con® Elcos Throughout The Unit

  • All Through-hole Components And No SMDs

  • Japanese Made TOCOS® Sealed Potentiometers

  • Carling Toggle Switches

  • Modular Design Throughout The Unit

  • 4mm Thick Carbon Steel Face Plates & Power Coating on all Panels

  • Fully Regulated Solid-State Power Supply With Soft Start & Short Circuit Protection On All Nodes

  • High-Quality Sealed Japanese Relays With Gold Contacts For All Localized Signal Switching

  • Individual Anti Pop Soft Start & Stop Phantom Power Switching & Indicator Lamp Per Channel

  • Buffered & Isolated VU Meter Driver Circuit With Selectable +4dB Or +8dB Scale Range

  • Saturation THD Indicator Of The Input EF86 Valve

  • 86V to 260VAC Global Line Operation

  • Accessory M808APB Patchbay Available For All I/Os On Front Panel

Key features:

  • MIC IN Input Impedance: (2KΩ) Actual. Accepts Microphones ranging from 33Ω - 600Ω

  • MIC IN (Pentode Mode) Maximum Gain: Approximately 80dB

  • MIC IN (Pentode Mode) Frequency Response: 10 Hz to 25 kHz ± 1dB @ 100Ω Source Impedance

  • MIC IN (Triode Mode) Maximum Gain: Approximately 65dB


  • MIC IN (Triode Mode) Frequency Response: 10 Hz to 25 kHz ± 1dB @ 100Ω Source Impedance

  • LINE OUT Impedance: 600Ω or 150Ω @ +4dB Output

  • INSERTS (SEND) Output Impedance: 250Ω

  • INSERTS (Receive) Input Impedance: 100KΩ

  • DI/INSTRUMENT Input Impedance: 1MΩ

  • Signal to Noise Ratio: >95 dB, A-weighted

  • Maximum Output Level for 1% THD: +10dB

  • THD + Noise at +4 dB: .02% 2nd Harmonic Dominant

  • Crosstalk: -100dB Between Channels

  • Power Requirements: 86V to 260VAC 50-60Hz For Global Line Operation.

specifications:


Documentation:

Operation & Maintenance


  • There are two types of premium grade output tube options from our factory that your unit can be customized and fitted with, Information about each premium type output tube and its characteristics can be found below. Please get in touch with us for more information, and to obtain a matched set.

Output tube options & characteristics:

Mystery Magicians Company M808A Tube Microphone Preamp NOS Tubes

Premium Grade 6350 ★★★★★ Output Tube



6350 Specifications:

  • Amplification Factor Mu μ: 18

  • Plate Impedance: 3900Ω

  • Transconductance: 4600 μMhos

  • Lower output Impedance than ECC82 & 6414

  • Higher headroom than ECC82 tube

  • Lower output gain than 6414 tube

THD Characteristics ( Fundamental @ 0 dBu):

  • 2k Harmonic: -61.3dB

  • 2.5k Harmonic: -99dB

  • 3k Harmonic: -75.3dB

  • 4k Harmonic: -102dB

  • 5k Harmonic: -94dB

  • 6k Harmonic: -98dB


Mystery Magicians Company M808A Tube Microphone Preamp NOS Tubes

Premium Grade 6414 ★★★★★ Output Tube


THD Characteristics (Fundamental @ 0 dBu):

  • 2k Harmonic: -51dB

  • 2.5k Harmonic: -97dB

  • 3k Harmonic: -75dB

  • 4k Harmonic: -108dB

  • 5k Harmonic: -92dB

  • 6k Harmonic: -99dB

6414 Specifications:

  • Amplification Factor Mu μ: 42.5

  • Plate Impedance: 7650Ω

  • Transconductance: 5550 μMhos

  • Higher Output Gain than 6350 & ECC82


Please Visit Our Dealers For Availability And Pricing.

Thank You!