Q: Is an amplifier required to use the 607 S3?

Yes, an external amplifier is required . The 607 S3 is a passive (non-amplified) speaker that cannot operate on its own. It must be connected to an amplifier to produce sound. The speaker accepts a wide variety of cable terminations to connect to your amplifier: 4 mm banana plugs, 6 mm and 8 mm spades, or bare wire up to 4 mm in diameter. To achieve the best performance, note that: The nominal impedance of 8 Ω must be compatible with your amplifier You can use bi-wiring/bi-amping by removing the metal jumpers between the terminals to improve detail resolution After installation, allow approximately 15 hours of normal use for the speaker's initial break-in

Question 1

Why doesn't the charge indicator show up when I charge the Bowers & Wilkins Pi6 with an empty battery?

Accepted Answer

The absence of a LED indicator when starting the charge is normal with a completely empty battery, as the charging case battery does not have enough energy to power the LED indicator immediately. Here’s why and how to check that the charging is actually working:

When you plug the USB-C cable into the charging case with a completely drained battery (case and earbuds), no LED appears in the first few minutes. This is completely normal: the case first charges silently until it has enough energy to turn on the LED indicator. Once the case battery reaches a minimum energy level, the indicator activates and starts flashing green.

Wait 5 to 10 minutes after plugging in for the LED to light up. If you want to check immediately that the charging is working, open the Bowers & Wilkins Music app (available for free on iOS and Android): it displays the exact battery level of the case and earbuds, regardless of the LED indicator. You will see a gradual increase in the charge percentage as soon as the device is connected.

To check that the charging has started:

Make sure the USB-C cable is properly connected to the USB-C port of the case
Check that the power source (wall socket or USB port) is working (test with another device if possible)
Let it charge for at least 5 to 10 minutes before expecting a visual indicator
Open the Music app to track the progress in real-time

Once the case has accumulated enough energy, the LED indicator will show: flashing green if the case battery is above 40%, flashing yellow between 20 and 40%, or flashing red if it is below 20%. A completely empty case takes up to 3 hours to fully recharge.

If after 15 minutes of charging no LED appears and the app shows no progress, try another USB-C cable or another socket. If the problem persists, also ensure that the case is not unnecessarily closed during charging: you can charge it with or without the earbuds inside.

Question 2

What types of connection cables are compatible with the 607 S3?

Accepted Answer

The Bowers & Wilkins 607 S3 accepts several types of connectors:

4 mm banana plugs
6 mm and 8 mm spades
Bare wire up to 4 mm in diameter

Connection configuration:

You have two options:

Standard connection: Keep the metal bridges in place and use a single pair of cables to the amplifier.
Bi-wiring: Remove the metal bridges and connect separate pairs of cables to each terminal (improves resolution and detail quality).

Important points:

Always respect polarity: red terminal (+) to the positive terminal of the amplifier, black terminal (-) to the negative terminal
Turn off the power before connecting or disconnecting cables
Use low-capacitance cables to preserve high-frequency quality

Question 3

Is an amplifier required to use the 607 S3?

Accepted Answer

Yes, an external amplifier is required. The 607 S3 is a passive (non-amplified) speaker that cannot operate on its own. It must be connected to an amplifier to produce sound.

The speaker accepts a wide variety of cable terminations to connect to your amplifier: 4 mm banana plugs, 6 mm and 8 mm spades, or bare wire up to 4 mm in diameter.

To achieve the best performance, note that:

The nominal impedance of 8 Ω must be compatible with your amplifier
You can use bi-wiring/bi-amping by removing the metal jumpers between the terminals to improve detail resolution
After installation, allow approximately 15 hours of normal use for the speaker's initial break-in

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