Mark 2

Your query "Research Mark 2" can correspond to several different contexts depending on the domain. Below I provide details on the most relevant research or product references to "Mark 2" from the search results:

  1. Audio Research Reference Two Mk II Preamplifier
    This is a high-end tube preamplifier by Audio Research Corporation. The Reference Two Mk II is a fully balanced preamp housed in a single chassis (19"W x 7"H x 15.5"D, 31 lbs), notable for very low distortion (<0.015%) and an extremely wide frequency response (.5 Hz–60 kHz). It employs multiple tubes (six 6H30s, plus 5AR4 and 6L6GC in power supply) with an estimated tube life of 4000 hours. Its design separates circuit boards into four isolated sections for sound quality and modular upgrades. The unit features a unique gain control with 125 incremental steps and flexibility for balanced or single-ended inputs, reflecting an advanced and versatile high-end audio component.

  2. Audio Research Reference 160 M MkII Monoblock Power Amplifier
    Another high-end tube amplifier by Audio Research, the Reference 160 M MkII is a mono power amplifier requiring two units for stereo, costing $19,000 each. It is recognized for combining qualities that are rarely all together: naturalness, tonality, power, and transparency — all in a tube amplifier format that was historically challenged by transistor alternatives. This product continues Audio Research’s legacy in tube-based high-fidelity amplification.

  3. GTA Online — Research for Mark 2 Weapons
    In the gaming context of GTA Online, "Research Mark 2" refers to the unlocking and upgrading of weaponized vehicles and weapon modifications called MKII. The research is conducted in-game via bunker facilities that speed up weapon upgrade unlocks. Upgrades such as staff and equipment improve manufacturing and research times, with options to "fast-track" research by spending in-game currency (e.g., $200,000). The Mark 2 weapons offer enhancements like explosive bullets, special scopes, and other add-ons, though these unlocks occur in a predetermined order and cannot be freely selected unless paid for directly.

  4. Original Prusa i3 MK2 3D Printer
    Though not strictly "Research Mark 2," this is a prominent product called MK2 (Mark 2) in the 3D printing field. The Original Prusa i3 MK2 features many improvements like a new heated bed (MK42), integrated Z-axis leadscrew, mesh bed auto leveling, and firmware self-test capabilities. It has a print volume of 250x210x200 mm and represents a significant upgrade over previous models, priced at $699 for the kit or $899 assembled.

  5. Research Station 2 in the game Industrialist
    The Research Station2 is a mid-game building in the game Industrialist, designed to produce research points (RP) faster than its predecessor. It represents progress in the game’s research mechanics, though details are limited in the current context.

If you are asking about a particular "Mark 2" research project or product, please specify the domain (audio equipment, gaming, 3D printers, etc.) for a more tailored and detailed analysis.

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