Teac HA-507 Headphone Amplifier and Preamplifier

Teac HA-507 Headphone Amplifier and Preamplifier

The Teac HA-507 is a headphone amplifier and preamplifier in a fully balanced dual-mono configuration. It can be used both as a standalone preamplifier and as a separate headphone amplifier in combination with external preamplifiers.

Headphone Amplifier Section

• Class AB amplifier with wide bandwidth and low distortion
• Fully balanced dual-mono configuration with four amplifier elements, originally developed for speaker drive
• Output power of 6700 mW + 6700 mW at 32 Ω on the balanced output
• In unbalanced operation, the internal amplifiers switch to an active-ground configuration
• Preamplifier bypass function for use as a separate headphone amplifier, activated via a switch on the rear panel; gain and L/R balance remain active
• Two balanced outputs: 1 × XLR 4-pin, 1 × 4.4 mm Pentaconn
• Two unbalanced outputs: 1 × 6.3 mm, 1 × 3.5 mm
• Switchable headphone output gain in three levels (high/mid/low)

Preamplifier Section

• Compact preamplifier in a fully balanced dual-mono configuration
• „TEAC-QVCS Advanced“ volume control: ladder resistor system with four independent circuits (L+, L-, R+, R-)
• Volume control in 0.25 dB steps
• Lossless FET input switching without mechanical contacts
• Output buffer amplifier „TEAC-HCLD 2 (High Current Line Driver 2)“ for fast current transfer
• Inputs: 2 × XLR, 2 × RCA
• Outputs: 1 × XLR, 1 × RCA

Power Supply

• Two independent power supplies: one for the audio circuits, one for the control circuits
• Toroidal transformer with separate left and right windings for the audio circuits
• 18,800 µF per channel (4,700 µF × 4) in dual-mono configuration
• Discrete regulated power supply with low feedback
• High-speed Schottky barrier diodes

Housing and Operation

• A4-sized aluminium housing for audio racks and desktop placement
• Semi-floating, 2.8 mm thick aluminium top plate
• Metal feet with three-point support
• Fanless heat dissipation design
• Preamplifier bypass for AV surround systems
• Trigger-In/Through connectors
• Aluminium knobs with patent-pending mechanism against off-axis movement
• Motorised volume control via RC-1340 remote (2 × AAA)
• Available in silver and black

Scope of Delivery

• Power cable
• RC-1340 remote control
• 2 × AAA batteries for the remote
• 3 × foot pads
• Owner's manual with warranty

Weight: 4.6 kg.

Delivery Time:
The delivery time is shown on the product page / in the listing.

2-Year Manufacturer Warranty:
This product comes with a 2-year manufacturer warranty. Depending on the manufacturer, a longer warranty period may apply — please refer to the manufacturer's terms for details.

14-Day Return Policy:
If the product arrives damaged due to the shipping company, Audio Everywhere will cover the return shipping costs.

Teac HA-507 Headphone Amplifier and Preamplifier

The Teac HA-507 is a headphone amplifier and preamplifier in a fully balanced dual-mono configuration. It can be used both as a standalone preamplifier and as a separate headphone amplifier in combination with external preamplifiers.

Headphone Amplifier Section

• Class AB amplifier with wide bandwidth and low distortion
• Fully balanced dual-mono configuration with four amplifier elements, originally developed for speaker drive
• Output power of 6700 mW + 6700 mW at 32 Ω on the balanced output
• In unbalanced operation, the internal amplifiers switch to an active-ground configuration
• Preamplifier bypass function for use as a separate headphone amplifier, activated via a switch on the rear panel; gain and L/R balance remain active
• Two balanced outputs: 1 × XLR 4-pin, 1 × 4.4 mm Pentaconn
• Two unbalanced outputs: 1 × 6.3 mm, 1 × 3.5 mm
• Switchable headphone output gain in three levels (high/mid/low)

Preamplifier Section

• Compact preamplifier in a fully balanced dual-mono configuration
• „TEAC-QVCS Advanced“ volume control: ladder resistor system with four independent circuits (L+, L-, R+, R-)
• Volume control in 0.25 dB steps
• Lossless FET input switching without mechanical contacts
• Output buffer amplifier „TEAC-HCLD 2 (High Current Line Driver 2)“ for fast current transfer
• Inputs: 2 × XLR, 2 × RCA
• Outputs: 1 × XLR, 1 × RCA

Power Supply

• Two independent power supplies: one for the audio circuits, one for the control circuits
• Toroidal transformer with separate left and right windings for the audio circuits
• 18,800 µF per channel (4,700 µF × 4) in dual-mono configuration
• Discrete regulated power supply with low feedback
• High-speed Schottky barrier diodes

Housing and Operation

• A4-sized aluminium housing for audio racks and desktop placement
• Semi-floating, 2.8 mm thick aluminium top plate
• Metal feet with three-point support
• Fanless heat dissipation design
• Preamplifier bypass for AV surround systems
• Trigger-In/Through connectors
• Aluminium knobs with patent-pending mechanism against off-axis movement
• Motorised volume control via RC-1340 remote (2 × AAA)
• Available in silver and black

Scope of Delivery

• Power cable
• RC-1340 remote control
• 2 × AAA batteries for the remote
• 3 × foot pads
• Owner's manual with warranty

Weight: 4.6 kg.

Delivery Time:
The delivery time is shown on the product page / in the listing.

2-Year Manufacturer Warranty:
This product comes with a 2-year manufacturer warranty. Depending on the manufacturer, a longer warranty period may apply — please refer to the manufacturer's terms for details.

14-Day Return Policy:
If the product arrives damaged due to the shipping company, Audio Everywhere will cover the return shipping costs.

Delivery time

Right above the "Add to cart" button you'll see your personal delivery window — calculated automatically and continuously updated.

Shipping costs

• Germany: free shipping from €250
• EU-wide: free shipping from €350
• Switzerland, Norway, United Kingdom: free shipping from €1,000

Deliveries outside the EU

For deliveries outside the EU, German VAT is deducted from the displayed price — you pay the net price. Please note: additional costs may arise in the destination country, e.g. import duties, import taxes or local charges. These costs are beyond our control and are borne by the buyer.

Returns

Audio Everywhere offers a 14-day return policy. If the package arrives damaged, we cover the return shipping costs. For questions about returns, you can reach us by email, WhatsApp or phone — please include your order number.

For details on warranty and guarantee, please refer to the respective product description.

Taxes and pricing according to German VAT law (UStG)

Consumers in Germany and the EU

All prices include the applicable VAT according to § 1 para. 1 in conjunction with § 12 UStG. Taxation within the EU follows the One-Stop-Shop procedure under § 18j UStG. The VAT rate of the respective destination country applies.

Deliveries to third countries (outside the EU)

Deliveries outside the EU are VAT-exempt according to § 4 no. 1a UStG in conjunction with § 6 UStG. German VAT is deducted from the displayed price — you pay the net price. Please note: additional costs may arise in the destination country, in particular import duties, import taxes or local charges. These are beyond our control and are borne by the buyer.

Used products (margin scheme)

For used products we apply the margin scheme according to § 25a UStG. In this case, no VAT is shown.

B-stock

B-stock items do not fall under the margin scheme. Regular VAT applies to B-stock and is shown accordingly.

Safety information — Audio Everywhere

These notes apply to all HiFi devices and accessories sold by us.

Electronic devices (amplifiers, streamers, CD players, turntables)

Operate only in dry, enclosed indoor spaces. Avoid moisture, direct sunlight and extreme temperatures. Use only the specified mains voltage — do not overload power strips. Do not switch on devices with damaged cables or housings. Keep ventilation slots clear: at least 10 cm distance from walls and other devices. Place stably and securely — no open liquid containers nearby. Keep out of reach of children and pets.

Speakers

Place on a stable surface or suitable stands. No moisture, no direct sunlight. Operate only with matching amplifiers and correctly polarised cables. Do not use as a storage surface. Keep out of reach of children and pets.

Cables (speaker cables, RCA, power cables)

Use only for the intended purpose. Always pull by the plug, never by the cable. Avoid kinks, sharp edges and pressure from heavy objects. Replace visibly damaged cables immediately. Keep out of reach of children and pets.

Accessories (adapters, mounts, cleaning agents, styli, headshells)

Use only according to the manufacturer's instructions. No aggressive cleaning agents, no damp environments. Store small parts safely due to choking hazard. Mount accessories correctly to avoid damage or malfunction.

General notes

Read the operating instructions before use. No unauthorised repairs or opening of devices. Always contact a specialist service for technical problems. We are happy to answer any questions about safe use at any time.