4) Rockville PRO-E90 80 Ohm Semi Open-Back Studio Headphones+Headphone Amplifier

Package Includes:

• (4) Rockville PRO-E90 80 Ohm Semi Open-Back Studio Headphones+Case+Detachable Cable
• (1) Rockville RHPA4 4 Channel Professional Headphone Amplifier Stereo or Mono Amp

Description:

The Rockville PRO-E90 80 Ohm Professional Studio Headphones are engineered for high-definition monitoring with outstanding accuracy and clarity. Featuring 45mm dynamic drivers with a 10-degree offset, lightweight translucent PET diaphragm, and powerful NdFeB neodymium magnets, they deliver fast transients, precise stereo imaging, ultra-low distortion (<0.06% THD @1kHz, 1mW), and a natural, spacious soundstage across a wide 10Hz–25kHz (±6dB) spectrum. The semi-open, circumaural design creates an open, airy listening experience while minimizing excessive bleed—ideal for mixing, mastering, tracking, and critical listening in controlled environments. Tight ±1.5dB channel matching and a 135dB max SPL ensure exceptional imaging and headroom. Designed for extended sessions, the PRO-E90 features a gentle 2.6N clamp force, lightweight 272g construction, ergonomic swivel cups, plush memory foam with protein leather padding, and user-replaceable slip-on pads. The robust stainless steel frame and extendable arms ensure exceptional durability for studio or daily use. With 102dB ±3dB sensitivity and robust 1500mW peak / 500mW RMS power handling, these 80-ohm headphones perform brilliantly across a wide range of sources—from portable devices to dedicated amps. The detachable 3-meter 100% OFC copper cable delivers flexibility and premium signal integrity, while the included hard fabric case protects your investment. The Rockville PRO-E90 is the versatile, reliable choice for musicians, producers, audio engineers, and audiophiles seeking detailed, open, and accurate sound in a comfortable, durable package.

Key Features:

• Semi-Open Circumaural (Over-Ear) Design
  
  • Provides a natural, spacious soundstage with reduced sound bleed for accurate, open monitoring.
    
• 45mm Dynamic Drivers with 10-Degree Offset Angle
  
  • Lightweight translucent PET diaphragm and Neodymium (NdFeB) magnet structure:
    
    • Fast transient response, low distortion, and detailed highs
      
    • Powerful neodymium magnets for efficient, high-definition sound
      
    • 10-degree offset for more natural, precise imaging
      
• 80-Ohm Impedance
  
  • Perfect balance of efficiency and control—easily driven by smartphones, laptops, portable players, audio interfaces, mixers, and home gear while offering superior performance with professional headphone amplifiers.
    
• High-Definition Sound
  
  • Exceptionally accurate reproduction with ultra-low distortion, tight channel matching, and extended frequency range for clean, reference-grade audio.
    
    • Sensitivity: 102dB ±3dB
      
    • Max SPL: 135dB
      
    • THD: <0.06% (@1kHz, 1mW)
      
    • Channel Matching: ±1.5dB across the bandwidth
      
• High Power Handling
  
  • Built for professional-level output.
    
    • Max Power: 1500mW
      
    • RMS Power: 500mW
      
• Premium Comfort
  
  • Gentle 2.6N clamp force, ergonomic swivel ear cups, highly flexible memory foam cushions with protein leather padding for extended, fatigue-free sessions.
    
    • Lightweight: 272g (headphones only)
      
    • User-replaceable slip-on ear pads
      
• Durable Construction
  
  • Sturdy stainless steel headband with extendable arms (min: 297mm / max: 362mm) and soft leather cover—built to bend and withstand daily pro use.
    
• Detachable 3M (9.8 ft) Cable
  
  • 100% OFC copper straight cable with twisted shield for premium signal transfer. Gold-plated 3.5mm connector + ¼” adapter included.
    
• Hard Fabric Carrying Case
  
  • Protective hard fabric-covered case for safe storage and travel.
    

How To Set Up Your RHPA4:

Video of RHPA4:

Includes:

• Headphone Amplifier
• USB to barrel jack cable and DC 5V USB Power Supply
• Owners Manual
• Warranty Card

Applications:

• Studio recording
• Podcasting
• Bands
• And more!

Features:

• Rockville RHPA4 4-Channel Professional Headphone Amplifier
• Inputs: ¼" and 3.5 mm input
• Stereo or Mono switch
• We include (4) ¼" TRS and (4) 3.5 mm headphone outputs run in parallel which means you can actually run 8 headphones (2 per channel)
• 4 Outputs each output has individual volume controls
• Thick metal shell casing
• High quality potentiometer knobs for each channel
• Power "On" LED.
• DC 5V USB power supply has low power consumption
• BUS powered means you can get power to the unit from a power bank or through the USB on a computer or laptop
• Rubber feet

Specifications:

• Input Impedance: 22K ohm
• Max. Input Level: +22dB
• Output Impedance: Min. 16Ohm
• Max. Gain: 20dB/Channel
• S/N Ratio: >98dB
• Frequency Response: 20 - 20 kHz
• S/N Ratio: > 90dB (ref 0dBu)
• THD: < 0.01%
• Power Supply: 5VDC, >=1000mA via USB Power Adaptor
• Dimensions: 4.6" x 3" x 2.36"
• Weight: 0.85 Lbs
• 0dBu = 0.775Vrms