Manley TNT 2-Channel Dual Mode Microphone Preamplifier


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  • Here is a twist: two different and discrepant mic preamps in one box for two different colors. By popular demand, one channel is the exact same micpre as in Manley's SLAM! with tubes and transformers. The second preamp is a fresh "No Tubes" design from Hutch and is inspired by old British console preamps with a tasty combination of "No Tubes" design with transformers. This one is not a clone of anything preexisting. It is a new flavor but reminiscent of that classic discrete sound. Both channels are designed around the basic goal of 'just plug a mic in and it sounds great.' The tube channel excels on traditionally difficult sources like some bright guitars, reed and brass, cymbals and some vocals. The "No Tubes" channel might be more suited for smoother vocals, drums, bass and raunchy guitars, but you never really knows which preamp is best for the job at hand until you try them. At least you'll have two qualified candidates in one handy 1U chassis.


    • 2-channel - tube/solid-state - microphone preamplifier
    • Variable input impedance near-zero gain change.
    • Variable Output Transformer Bypass
    • Switchable overdrive effects; "Clean," "'60s," and "'70s."
    • Designed to sound great without tweaking
    • Phantom power is soft-switched and shunt regulated for lowest noise
    • Phase switch
    • HP filters
    • LED overload and level indicators
    • Instrument inputs
    • Six low noise shunt regulators, and five standard regulators in the solid-state side
    • When High-pass filter is bypassed, the preamp is designed to have almost DC response (.01Hz) at all gain settings.
    • LED meter indicates first and second stage clipping
    • Output is capable of greater than +30 dBu (70 volts peak to peak into 50 ohms from the solid-state side)
    • Both the current mode and voltage mode preamps sport EIN numbers of 130dB, very close to the theoretical minimum noise possible

    There are a vast number of mic preamps available and today people choose Mic Preamps based on the sound and performance for particular sources, different mics and how those combinations work in individual songs. This approach is valid but tends to require at least 3 or 4 different stereo preamps (almost all are basic stereo) and that can be expensive when quality is involved and certainly overkill for most simple overdubs when we get the chance to choose the micpre. The Manley TNT is a new concept in microphone preamplification for those who don't always need stereo everything but often need choices and often need the best. Besides, you probably have a number of typical stereo preamps and are still looking for that one killer preamp.

    Manley Labs saw a need for a different unit that truly offered a rainbow of high-end preamp colors at an affordable price. The "T" (Tubes) channel starts off with the highly acclaimed vacuum tube micpre from the SLAM! that is certainly a contender amongst the best cost-no-object tube preamps. The "NT" (No Tubes) channel adds a no-compromise solid-state preamp that sets new sonic standards. (Just trust us.) Because the solid-state side uses two opposite topologies in tandem that are user controllable, it is like getting two pre-amp 'sounds' on that side alone.

    The MANLEY TNT is a remarkable and desirable tube preamp on one side and its equivalent in solid-state on the other side. These are not simulations, not samples, nor are they a clone or a toy. It is really good ol' analog done right.

  • TUBE CHANNEL (Left Channel)  
    Tube Channel Vacuum Tubes 1 x 12AT7EH + 1 x NOS 6414 or 6414W
    Gain Range +10 dB to +80 dB (20 to 70dB in 5 dB steps)
    Mic Input Impedance 600, 2400, 10,000 Ohms
    Instrument Input Impedance 300K,1Meg, 3 Meg Ohms
    Frequency Response (-1 dB) 10 Hz to 30 kHz; (-3dB) 5 Hz to 45 kHz
    THD & NOISE (1 kHz @ 20 dB gain) 0.035% typical (-68 dB)
    Noise Floor -60 dB typical referenced to +4dBm
    EIN -120 dB
    Signal to Noise @ 70 dB Gain 95dB (TRIM has major effect)
    Maximum Output for 1% THD via BALANCED +4 XLR 31 dBu
    COOL CHANNEL (Right or Solid State Channel)  
    Gain Range +10 dB to +80 dB (20 to 70dB in 5 dB steps)
    Mic Input Impedance 300, 600, 2000, 2 Meg Ohms
    Instrument Input Impedance 100K, 300K,1Meg, 3 Meg, 10 Meg Ohms
    Frequency Response (-1 dB) 15 Hz to 30 kHz; (-3dB) 5 Hz to 50 kHz
    THD & NOISE (1 kHz @ 20 dB gain) 0.01% typical (-80 dB) (no distortion products measurable, noise dominates measurement)
    Noise Floor -66 dB typical referenced to +4dBm
    EIN -126 dB
    Signal to Noise @ 70 dB Gain 85dB (TRIM has little effect)
    Maximum Output for 1% THD via BALANCED +4 XLR: 30 dBu
    via UNBALANCED +4 output: 24 dBu
    via UNBALANCED -10 output: 16 dBu
    Distortion @ 1K using 60' / 70's switch 1.5% typical with LED onset (+4 dBu out)
    3% typical with LED fully lit (+7 dBu out)
    Power consumption 30 watts
    Operating mains voltage Units' power transformers are wired for original destination country's mains voltage: 100V, 120V, or 220-240VAC as indicated on the serial number badge. Power transformer must be rewired on the pcb in order to change mains operating voltage. Fuse must be changed to appropriate value.
    Mains Voltage Frequency 50~ 60Hz
    Fuse Values @ 100 - 120V operation: 500mA; @ 220 - 240V operation: 250mA
    Fuse Size 1/4" x 1 1/4" MDL or MDA SLO-BLO (time delay) type
    Dimensions 19" x 1 3/4" x 10" (occupies 1u)
    Unit Weight 11 lbs. Shipping Weight: 16 lbs. in a 22.5" x 14.5" x 8" BOX
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