Description

Classic passive equalizers are prized for their musicality, openness and effortless tonal shaping, but traditional designs have always come with one major limitation: recall. The Bettermaker Valve Stereo Passive Equalizer solves that problem by combining a fully analog passive EQ circuit, transformer-balanced outputs and a vacuum tube drive stage with digitally controlled precision and complete DAW integration. Designed for mastering, mix-bus processing and high-end tracking applications, it delivers the broad, musical curves engineers expect from a premium passive equalizer while adding modern workflow features such as total recall, automation and preset management. The result is a processor that captures the warmth and depth of classic analog hardware without sacrificing speed or convenience.

Passive EQ Character Enhanced by Vacuum Tube Saturation

At its core, the Valve Stereo Passive Equalizer features a true analog passive equalization circuit capable of broad, musical tonal shaping across the frequency spectrum. Dedicated low-frequency boost and cut sections allow powerful bass contouring, while selectable high-frequency boost bands extend all the way to 28kHz for the airy openness often associated with mastering equalizers. A vacuum tube drive stage and transformer-balanced output section further enhance the signal path, adding harmonic richness, depth and analog character. Activating the HEAT function drives the tubes harder for additional saturation and color while automatically maintaining consistent output levels.

Modern Recall, Automation and Workflow Integration

While the audio path remains completely analog, all control functions are digitally managed and fully integrated with the included DAW plugin. Engineers can save and recall presets, automate settings, create session snapshots and instantly compare different processing approaches without manually resetting controls. The plugin also expands the processor’s functionality with dual-mono operation, spectrum analysis, digital high-pass and low-pass filters, Auto Audition mode and graphical EQ curve editing. This hybrid architecture delivers the workflow advantages of software while preserving the sonic integrity of premium analog hardware.

Built for Professional Mastering and Hybrid Studios

Engineered for demanding studio environments, the Valve Stereo Passive Equalizer combines balanced XLR connectivity, high-headroom analog circuitry and comprehensive DAW compatibility in a compact 2U rackmount chassis. Internal state memory preserves settings through power interruptions, while firmware updates and plugin enhancements help support long-term functionality. With transformer-balanced outputs, mil-spec NOS vacuum tubes, extensive recall capabilities and a highly musical passive EQ design, the Bettermaker Valve Stereo Passive Equalizer delivers the analog character, precision control and workflow flexibility demanded by today’s mastering and mix engineers.

Bettermaker Valve Stereo Passive Equalizer
Bettermaker Valve Stereo Passive Equalizer
Bettermaker Valve Stereo Passive Equalizer

Features

  • Stereo passive equalizer with DAW control shapes mixes with analog tube color
  • HEAT drive pushes tubes for variable saturation and mix glue
  • Digital plugin control enables session recall and automation in real time
  • Four analog bands with stepped control allow precise repeatable adjustments
  • Dual mono and linked stereo operation support flexible tracking and mastering workflows
  • High and low cut filters target harshness or mud without digital artifacts
  • Quantize mode locks filter steps for fast exact recall during sessions
  • Internal memory restores settings and uptime after power interruption
  • Auto Audition solos frequency bands for critical mix decisions

Specs

General
  • Product type: Stereo passive equalizer with tube output stage
  • Model: Valve Stereo Passive Equalizer (VSPE)
  • Format: 2U rackmount
  • Signal path: Analog passive EQ with transformer-balanced output and vacuum tube drive stage
Equalization
  • Low boost frequencies: 20Hz, 30Hz, 60Hz, 100Hz
  • Low cut frequencies: 20Hz, 30Hz, 60Hz, 100Hz
  • Maximum low boost: 15dB @ 100Hz
  • Maximum low cut: 16dB @ 100Hz
  • High boost frequencies: 3kHz, 4kHz, 5kHz, 6kHz, 8kHz, 10kHz, 12kHz, 16kHz, 20kHz, 28kHz
  • Maximum high boost: 18dB
  • High cut frequencies: 5kHz, 10kHz, 20kHz
  • Output gain: ±8dB
  • Output gain resolution: 0.1dB (1dB in Quantize mode)
  • Control resolution:
  • • 101 steps (Low Boost, Low Cut, High Boost, Bandwidth)
  • • 34 steps (High Cut)
  • • 17 steps for all controls in Quantize mode
Tube Processing
  • HEAT mode: Variable tube saturation circuit
  • Output stage: Vacuum tube drive stage with transformer-balanced output
  • Transformer: Bettermaker TT-1 output transformer
Processing Modes
  • Stereo mode
  • Dual-mono mode (plugin-connected operation only)
  • Quantize mode
  • Auto Audition mode
Features
  • 400 onboard memory slots
  • Preset recall and automation
  • 32 automation-triggerable snapshots per preset
  • Input level metering
  • Spectrum analyzer
  • Digital HPF and LPF within plugin
  • Real-time EQ curve display
  • State memory with automatic recovery after power loss
  • Power cycle counter and uptime clock
  • Relay bypass
Display & Controls
  • LCD touchscreen interface
  • 5 velocity-sensitive rotary encoders
  • GAIN mode for output trim adjustment
  • Auto Audition frequency-band solo function
Audio Performance
  • Maximum input level: +24dBu
  • Maximum output level: +22dBu
  • Nominal operating level: +4dBu
  • Input level metering range: -15dBu to +24dBu
  • Input impedance: 48 kohm balanced
  • Output impedance: 120 ohm (30 ohm with HEAT enabled)
Connectivity
  • Audio inputs: Balanced XLR
  • Audio outputs: Balanced XLR
  • USB: USB connection for DAW control, automation, firmware updates, and preset recall
Software Compatibility
  • Plugin formats: VST3, AU, AAX Native
  • Operating systems:
  • • macOS 10.11–12 (Intel and Apple Silicon)
  • • Windows 8–11 (64-bit)
System Requirements
  • RAM: 2GB minimum
  • Display resolution: 1440 × 900 or 1280 × 960 minimum
Power
  • Power supply: External 100–240VAC adapter included
  • Power consumption: 18W maximum
  • Standby power consumption: 2W
Dimensions
  • Rack size: 2U
  • Depth: 5.5"
  • Shipping dimensions: 23.6" × 11.8" × 7.9"
  • Unit weight: 6.0 lb.

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