Benchmark HPA4 - Physical Description; Front and Rear Panel Overview

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Instruction Manual for HPA4 with 1.0.X Firmware – REV B Page 5

Front Panel

Rear Panel

Table of Contents

Safety Information2
- Fuses2
- AC Input Voltage Range2
- Power Cord2
- Modifications2
- Repairs2
- Table of Contents3
Front Panel5
Rear Panel5
Features6
Quick Start Guide7
- Main Screen7
- Balance Controls8
- Screen Navigation9
- Display Settings10
Remote Control11
Front Panel Controls12
Connecting Other Audio Components13
- Use Balanced Interfaces When Possible13
- Balanced XLR Signal Levels13
- Selecting Components for Your System13
- Use the 12V Trigger Connections13
Connecting Benchmark Components14
- Benchmark AHB2 Power Amp14
- Benchmark DAC14
Basic Features15
- Input Selection15
- Volume Control15
- Balance Adjust15
- MUTE Function15
- -20 Db DIM Function15
Advanced Features (Settings Screens)16
- Settings Menu Screens16
- DISPLAY Settings17
- Input Setup19
- Rename Input19
- Volume Setup19
- Settings Lock19
- POWER Settings20
- REMOTE Settings21
- ABOUT Screens22
- Splash Screen22
- RESET Screens23
HPA4 System Overview24
- The Ultimate Headphone Amplifier24
- The Ultimate Line Amplifier24
- Relay-Controlled Gain Stages24
- Balance Controls24
- 100% Analog Signal Path24
- Fully-Balanced Signal Paths24
- Differential Amplifiers24
- Powerful Headphone Output25
- Dual Headphone Outputs25
- Ultra-Wide Bandwidth25
- Rotary Encoder25
- Convenience Features25
- 12V Trigger26
- Auto-On Function26
- Casework26
- Equipment Placement26
- Auto-Ranging Power Supply26
Audio Line Inputs27
- Balanced XLR Interfaces27
- Unbalanced RCA Interfaces27
- Input Level Matching27
Audio Line Outputs27
- Unity Gain at 0 Db27
- Db Offset Balanced Vs. Unbalanced27
Headphone Outputs28
- Driving Two Sets of Headphones28
- Standard 1/4" TRS Connector28
- High Performance XLR4 Connector28
THX-888 Amplifier29
- Headphone and Hearing Warnings29
- Soft-Start Circuit29
- Protection Circuits29
Advanced Feature Details30
- PRESET Mode30
- Auto-On Function30
- Bi-Directional 12V Trigger30
- Software Version Identification31
Performance Graphs32
Specifications50
- THX-888 Headphone Outputs50
- Balanced Analog Outputs50
- Unbalanced Analog Outputs51
- Balanced Analog Inputs51
- Unbalanced Analog Inputs51
- Status Display52
- AC Power Requirements52
- Dimensions52
- Weight52
- Model Numbers52
AC Power-Entry and Fuse Module53
Regulatory Compliance54
- FCC Notice (U.S. Only)54
- Rohs Compliant Information54
- CE Certificate of Compliance55
Warranty Information56
- Benchmark 1-Year Warranty56
- Benchmark Extended Warranty Options57
- Notes on Warranty Repairs57

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