This style of preamp is often referred to as "the sound of Rock n' Roll" for its BIG punchy low end and smooth open top end. The price/performance ratio of the WA-412 is almost unfathomable to the experienced studio engineer who has possibly paid much more for preamps of this style during their career. Featuring fully discrete socketed 6-pin opamps and custom wound Altran USA input and output transformers, the WA-412 leaves nothing to be desired. If you are looking for multiple channels of world class tone in an affordable package, the Warm Audio WA-412 4-Channel Discrete Microphone Preamp is the right choice for you. More Features The WA-412 has all of the features one would expect from this style of preamp... and more. Output Trim has been added to every channel for precise control and creative gain structuring. We also added a Tone switch (transformer input impedance) to each channel, which allows you to choose the warm and punchy classic console tone, or a more open & neutral sound. Better Components Each channel utilizes a fully discrete socketed 6-pin opamp that can be swapped with other opamps. Discrete opamp circuitry is known for its high headroom and low distortion characteristics and has much to do with the coveted sound of these classic console preamps.   Warm Audio is proud to be using input and output transformers that are made in the USA by high-end transformer manufacturer, Altran. They  worked closely with Altran to create unique transformers that extend the low frequency response of the design. The transformers also use a vintage winding technique that produces a very distinct smooth & open character. Carefully choosing the WA-412 components has resulted in an amazing four channel ˜workhorse preamp/DI that performs at the highest levels, while still adding a touch of vintage console magic to your signal. Features: 4 Channel Microphone Preamplifier + Instrument DI Fully discrete, transformer coupled, through-hole component topology Altran USA custom wound, premium input and output transformers X520 discrete op-amp in every channel, socketed for convenience. 65db of gain +48 volt phantom power Internal power supply Get your Warm Audio WA-412 4-Channel Discrete Microphone Preamp today at the guaranteed lowest price from Sam Ash Direct with our 45-day return and 60-day price protection policy.