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[Jaben Combo] Fostex TH500RP + Elemental Sherlock

Fostex TH500RP

  • Employs the uniquely developed RP (Regular Phase) diaphragm which consists of etched copper foil on the surface with high heat resistant polyimide film as the base material. The distinctive characteristic of planar diaphragm is further evolved by newly tuning the entire driver unit
  • The high specific gravity resin baffle plate deliveres a high resolution sound with rich mid range and good quality lows and a reduction in unwanted resonance
  • The use of aluminum and magnesium for structural parts, the TH500RP achieves a high quality texture and light weight. A unique punched metal is used for the housing, which pays hammage the original RP headphone design.
  • The high quality soft leather ear pad ensures the optimum distance between the diaphragm and the ear for a comfortable listening experience even in prolonged use
  • The connecting cable is made of "HiFC"(*) which for the ultimate sonic purity and superior conductivity
  • The gold plated plug features the "Fostex" logo
  • The package includes a quality leather texture pouch for protection during transportation

Elemental Sherlock

Upgradable dual-mono balanced configuration  
Bridgeable 4x output power  
6AK5 military grade vacuum tubes  
High capacity power reservoir and audio grade passive components

  • Following the tradition of Elemental Amps, Sherlock is designed for a no-compromise performance at a very affordable price. During the design process, we took further steps to make Sherlock modular and expandable, from a stereo amp to a fully balanced amplifier. We are pleased that we succeeded in producing the Sherlock with unprecedented driving capability and musicality at a very cost-effective price point.  

    (Bridged circuitry convert single-ended signal into balanced ones)

    To reach this goal, we trimmed all unnecessary features and cosmetics. We then focused on Sherlock’s core competence - the amplification. The kernel of Sherlock is a class-A tube gain stage that dominates the sound quality with the tubes unique signature. This is followed by a single-ended class-A MOSFET power stage to provide plenty of current for demanding headphones.  

    Sherlock’s uniqueness is the added bridged circuits ahead of the main amp. These circuits when activated converts input signals into balanced (positive plus negative polarities) format and feeds to the left and right channels. This special design feature turns a tandem pair of Sherlock into a truly stereo balanced amplifier.  

    Sherlock is the first bridgeable headphone amplifier and audiophiles can enjoy the single chassis first and subsequently upgrade to double chassis for balanced performance. The audiophile with their numerous headphone collection will find the Sherlock to be a timeless investment.

  • Frequency Response

    5Hz – 50 kHz (-3dB)

    Output power

    1000 mW + 1000 mW (60 ohm)

    Headphone impedance

    16 ohm – 600 ohm

    Max. Input Voltage

    2V (RMS)


    1 pair RCA


    1 x 1/4” TRS

    Power supply

    30V/0.8A power adaptor


    16 x 14 x 4.5 cm

    Net weight

    850 g