Krell Evolution 707

Up for sale is the legendary Krell Evolution 707 in brushed silver with 4K HDR HDMI switcher included.

IMPORTANT: This unit is being sent back to Krell for a new HDMI board and will be shipped directly from headquarters to the buyer. Remote and HDMI switcher will ship from me separately. 

The Krell Evolution 707 is a high-end, state-of-the-art surround preamp/processor designed for home theater systems. Known for its exceptional audio and video performance, the Evolution 707 is part of Krell's prestigious Evolution series.

This is one of the best preamps I've ever owned and breathes new life into 2-channel music or movies with any setup. 

Condition: Housed in a pet-free, children-free, smoking-fee, environment.There are some minor scratches on the top of the unit (see photos). There are a couple tiny, hairline marks on the faceplate but they will not show up in photos. Nonetheless I must mention them. Also, there is a small blemish near the infrared sensor that I will have Krell remove. Overall, this preamp is in great shape. 

The Krell 4K HDR HDMI Switcher included with the 707 is a high-performance device that enhances the functionality of any home theater system. Its support for 4K UHD and HDR ensures top-tier video quality, while its ability to pass through high-resolution audio formats maintains superior sound quality.

*Note: I have Stealth Audio Metacarbon XLR cables for 7.1 channels that were ordered directly from Stealth. Please inquire if interested. 

Build Quality:

• Robust Construction: The Evolution 707 is built with a heavy-duty chassis and high-quality components to ensure durability and minimal interference.
• Aesthetic Design: Available in sleek silver or black finishes, the Evolution 707 exudes luxury and sophistication, complementing any high-end home theater setup.

Audio Performance:

• Exceptional Clarity: With 24-bit/192 kHz DACs for all channels, the Evolution 707 provides crystal-clear audio reproduction, ensuring every detail in the soundstage is heard.
• Immersive Surround Sound: Support for all major surround sound formats allows the Evolution 707 to deliver an immersive audio experience for movies, music, and gaming.
• Low Distortion: The preamp/processor features extremely low total harmonic distortion (THD), ensuring pure and accurate sound.

Video Performance:

• Advanced Video Processing: The inclusion of the Silicon Optix Realta HQV video processor allows for superior video upscaling and processing, enhancing the quality of all video sources.
• HDMI 1.3a Support: Compatibility with HDMI 1.3a ensures support for the latest high-definition video formats and Deep Color, providing vibrant and lifelike images.

Connectivity and Integration:

• Comprehensive Inputs and Outputs: The Evolution 707 offers a wide range of inputs and outputs, including multiple HDMI ports, balanced and unbalanced audio connections, and digital audio inputs/outputs.
• Home Automation: With RS-232, IR input, and trigger options, the Evolution 707 can be seamlessly integrated into sophisticated home automation systems.

User Experience:

• Ease of Use: Despite its advanced capabilities, the Evolution 707 is designed to be user-friendly, with an intuitive interface and straightforward setup process.
• Customizable Settings: Users can fine-tune audio and video settings to match their specific preferences and the acoustics of their home theater environment.

Shipping:  Your choice, cost and logistical setup. Krell uses FedEx, which would be my default option. 

Boxed Weight: 80 lbs.

Payment: Wire or PayPal friends and family (to avoid extra fees) preferred. If you are more comfortable using PayPal with fees to protect your transaction, please add 4% to cover those fees along with determined freight shipping costs and any optional add-ons that were negotiated. If sending a certified check, items will not be shipped until the funds clear. 

Specifications:

1. Type:

   • Surround Sound Preamp/Processor

2. Audio Processing:

   • Supported Formats: Dolby TrueHD, Dolby Digital Plus, Dolby Digital EX, DTS-HD Master Audio, DTS-ES 6.1 Discrete, DTS 96/24, DTS-ES Matrix, and more.
   • DACs: 24-bit/192 kHz DACs for all channels

3. Video Processing:

   • Video Formats: HDMI 1.3a, 1080p/24 support, Deep Color, xvYCC
   • Video Processing: Silicon Optix Realta HQV video processor

4. Inputs and Outputs:

   • HDMI Inputs: 6
   • HDMI Outputs: 2
   • Analog Audio Inputs: 8 stereo pairs (RCA)
   • Digital Audio Inputs: 4 coaxial, 4 optical
   • Analog Audio Outputs: 8 balanced (XLR) and unbalanced (RCA)
   • Digital Audio Outputs: 1 coaxial, 1 optical

5. Control:

   • RS-232, IR input, and trigger inputs/outputs for integration with home automation systems

6. Audio Specifications:

   • Frequency Response: 20 Hz to 20 kHz, +0/-0.1 dB
   • THD: <0.003%
   • Signal-to-Noise Ratio: >100 dB

7. Dimensions:

   • Height: 9.7 inches (24.6 cm)
   • Width: 17.3 inches (44 cm)
   • Depth: 19.6 inches (49.8 cm)

8. Weight:

   • 60 lbs (27.2 kg)

9. Finish:

   • Silver 

10. Boxed Weight:

    • Approximately 75 lbs (34 kg)

4K HDR HDMI Switcher


Build Quality:

• Sturdy Construction: The switcher is built with high-quality materials, ensuring durability and longevity. The robust design helps maintain stable performance over time.
• Compact Design: Despite its solid construction, the device is relatively compact and lightweight, making it easy to integrate into existing home theater setups.

Video Performance:

• 4K UHD Support: The switcher supports 4K UHD resolution at 60Hz, ensuring compatibility with the latest high-definition video sources.
• HDR Compatibility: High Dynamic Range (HDR) support enhances video quality by providing greater contrast and more vibrant colors, ensuring an immersive viewing experience.
• Seamless Switching: The device ensures seamless switching between HDMI sources without any noticeable delay or loss of signal quality.

Audio Performance:

• High-Resolution Audio Pass-Through: The switcher supports pass-through of high-resolution audio formats, including Dolby TrueHD, Dolby Atmos, DTS-HD Master Audio, and DTS, ensuring that audio quality is preserved when switching between sources.
• HDCP 2.2 Compliance: The switcher is compliant with HDCP 2.2, ensuring compatibility with copy-protected content and the latest 4K media.

Connectivity and Control:

• Multiple Inputs and Outputs: With 4 HDMI inputs and 2 HDMI outputs, the switcher provides ample connectivity options for multiple sources and displays.
• Remote Control: The included IR remote control allows for easy switching between sources.
• Home Automation Integration: The RS-232 port enables integration with sophisticated home automation systems, allowing for centralized control of all home theater components.