—— SPECIFICATION ——

Model: RunAbout PLUS

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Connector Complement: 1×3.5mm stereo jack for Input

1×3.5mm stereo jack for Output

1×DC005 power jack for DC adapter

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Frequency Response: 20Hz-20KHz,±0.2dB

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Maximum Current Output: 0.07A

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Maximum Voltage Output: 2.6V RMS

5.3V RMS(with 16.8v warp core {external rechargeable battery pack})

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Maximum Power Output,32ohm : 150mW RMS per channel

150mW RMS per channel (with 16.8v warp core {external rechargeablebattery pack} )

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Maximum Power Output,300ohm : 20mW RMS per channel

90mW RMS per channel(with 16.8v warp core {external rechargeable battery pack} )

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Maximum Power Output,600ohm : 10mW RMS per channel

50mW RMS per channel(with 16.8v warp core {external rechargeable battery pack} )

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THD: ≤0.05%,20Hz-20KHz,1V RMS

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IMD: ≤0.06%,1V RMS

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SNR: ≥94dB,1V RMS,unweighted, gain=10.5dB

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Crosstalk: ≥90dB,20Hz-20KHz

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Output Impedance: 0.7ohm

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Gain: 3.35(10.5dB),5.7(15.1dB)

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Topology: OP+BUF,precision virtual ground reference,isolated power supply

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Power Supply: 1×9V 6F22 Battery,or 18V DC adapter

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Power Consumption: 0.072W

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Size: 4.33×2.83×1.06(in)

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Weight: 200g(without battery) ==============================================================

VE\'s description of the RA: RUNABOUT(RA) is Venture Electronics\' first portable amp. It is a classical OP + BUF design with two gain settings (Low Gain=3.4X, High Gain=5.7X). The output voltage swing is 3V RMS. Driving [email protected] 150mW and [email protected] 55mW, it is designed to work with most dynamic driver based earphones and headphones. RA uses a single 9V battery (6F22 type), DC to DC voltage boost, replaced by a virtual grounds / 3 channel headphone amp design. This is a very classic design and has been implemented in many successful amps from various established brands. While using TLE2426 as the power managing chip, we chose BUF634 to be RA\'s buffer & isolation chip. Not only it can effectively solve the capacitive load caused by self-excited oscillation and related issues, it also became the solid foundation of the implementing high-current OP / BUF for the amp section. The amp section consists of 2 x JRC4556AD, a low voltage, high output current OPA chip. Along with its input stage BJT design (similar to more popular OPA chips like OPA2604, OPA2132, etc.), this design offers less background noise and increased stability with low impedance audio source. RA uses a large negative feedback loop, and resistors are added between the OPA chips to regulate and isolate the current. The added bead design in the output section further ensures its stability.

  • Channels: 2 (2.0)
  • Color: RaPlus, RaPlusWithBattery, RaPlusWithWarp Core
  • Output Power: 32ohm 150mW RMS per channel
  • Output Type: 3.5SE
  • Input Type: 3.5SE
  • Brand Name: Venture Electronics
  • Package: Yes
  • Type: Mini Amplifier
  • Model Number: VE RunAbout AMP portable
  • Recommended Headphone Maximum Impedance: 501-600 Ohm
  • Built-in Battery: Yes

  • Unit Type: piece
  • Package Weight: 0.45kg (0.99lb.)
  • Package Size: 15cm x 15cm x 15cm (5.91in x 5.91in x 5.91in)

  • Author: Victoria Vap
  • Date: 2018-02-23
  • The best portable amp I have heard. It really shows what the Zen are capable of.
  • 5/5

  • Author: Fastbreakpizza
  • Date: 2018-03-13
  • very good value for the money get the it while the zen lite bundle lasts
  • 5/5

  • Author: Vinakirazuri
  • Date: 2018-01-10
  • nice amp with strong build. free zen lite. Thanks Lee
  • 5/5