Free tools Windows power users keep installed
One-click scans. No signup required.
iTechGuides is reader-supported. When you buy through links on our site, we may earn an affiliate commission. As an Amazon Associate I earn from qualifying purchases. Learn more
Usually, no. Active (also called powered) speakers contain their own power amplifier, so a separate stereo amplifier or receiver is not needed for normal operation. Connect a compatible source directly to the speaker.
A separate DAC is optional and depends on where digital-to-analog conversion should happen. A separate preamp is generally unnecessary for line-level sources; the important exception is a turntable whose cartridge signal has not been boosted by a built-in phono preamp.
What “active” or “powered” speakers already include
An active speaker has one or more power amplifiers built into the speaker system. In a pair, the electronics may be housed in one cabinet and feed the other through a supplied speaker connection, or each cabinet may have its own amplifier. Either arrangement is fundamentally different from passive speakers, which require an external power amplifier.
Recommended Free Tools
The built-in amplifier takes a line-level or converted source signal and drives the speaker drivers. That is why a phone, computer, streamer, television, or other suitable source can normally connect directly to an active speaker. Audioengine describes its powered models this way: the amplifiers are built in, so a separate power amplifier is not required for ordinary use.
#1 Best Overall
- Converts phono signals: a turntable preamp that converts phono signals to line level signals. This state-of-the-art circuitry phono preamp can accommodate magnetic pickups with an input sensitivity of 3mV at 50K ohms
- Low noise operation: offers outstanding performance with it’s low-noise Audio operational amplifiers. The output is 2V max (p-p) at 10K ohms. It’s better to position the preamp close to the source to reduce unwanted noise and interference
- Connects to turntables: connect any Turntable to modern sound equipment without specialized phono input for amplifying music. For the receiver, This can be connected to speakers, computers, laptops and more
- Simple plug & play: This mini preamp has stereo RCA inputs and stereo RCA outputs. Connect the Turntable to the RCA inputs and ground. Then, connect the amplifier Receiver to the RCA outputs
What the built-in amplifier does not automatically provide
Built-in amplification does not mean every active speaker accepts every type of source. A model may offer only analog RCA or 3.5 mm inputs, while another may add USB, optical, Bluetooth, HDMI ARC, a subwoofer output, or balanced connections. The amplifier answers the power question; the input panel determines whether your source can connect without another device.
When you do not need a separate amplifier or receiver
If the source already supplies a signal the speaker accepts, connect it to the corresponding input and use the speaker’s volume control, remote, or source-level control. No separate power amplifier is required for:
- A phone or computer connected through a supported analog or wireless input.
- A computer connected to the speaker’s USB or optical input when that input includes the necessary internal DAC.
- A television connected through an input the speaker supports, such as optical or HDMI ARC on models that provide it.
- A turntable whose output is already line level because its built-in phono preamp is enabled.
A stereo receiver can still be useful as a source selector or control center, but it should not be used to power the active speakers. The receiver must provide a line-level or preamp output, not an amplified speaker-terminal output.
Quick wins for a faster PC:
Clear out junk files and repair common Windows errorsFree Scan →Scan for outdated or missing drivers - takes under a minuteDriver Scan →Repair Windows errors before they cause bigger problemsFix Now →Do active speakers need a separate DAC?
Only when the signal path requires one or when you want to change where conversion occurs. Digital audio must become an analog signal before the amplifier can drive the speaker. That conversion can happen inside the active speaker, inside the source device, or in an external DAC.
Rank #2
- Tube MM Phono Preamplifier: This Fosi Audio phono preamplifier removes low-frequency noise and ensures clear sound quality by converting phono signals to line-level signals using high-quality components and low-noise integrated circuits. It is designed to safeguard your turntable thanks to its grounding post
- 3 Switchable Gain Modes: You can switch between 3 modes: 39, 42, or 45 dB. High compatibility and customizable control are provided by the adjustable gain levels. Also, it has very good circuitry and entry-level, high-end analog sound
- Tube Preamplifier: With a 3.5mm AUX input, it's also a tube preamp. Fosi Audio used high-quality component parts for the design and assemblage of this phono preamplifier. You can enjoy a very warm and smooth sound
- Applicable Vacuum Tube Model: The compatible vacuum tube models are 6K4, 6J1, 6J4, GE5654, 6AK5, 66, etc. To make changes to your stereo system yourself, simply swap out the vacuum tubes. Consider that distinct tubes produce various sounds
- Package Content: You will get 1 x Box X2 phono preamp, 2 x vacuum tubes, 1 x RCA cable, 1 x power adaptor, and 1 x user manual
Using the speaker’s internal DAC
USB, optical, Bluetooth, and similar digital inputs send digital data to the speaker. A speaker with the relevant input normally contains a DAC for that path, so an additional DAC is not required. The speaker handles conversion and amplification internally.
Bluetooth also involves wireless codec processing before the signal reaches the speaker’s conversion stage. The exact codec support and input behavior vary by model, so check the manual if latency, high-resolution formats, or multi-device pairing matters.
When an external DAC makes sense
An external DAC is an optional upgrade or troubleshooting device, not a mandatory part of every powered-speaker system. It can be useful when:
Do these 3 things before closing this tab:
1Clear out junk files and repair common Windows errors2Fix the driver behind crashes, sound loss and screen glitches3Repair Windows errors before they cause bigger problems- A computer’s analog headphone output has audible electrical noise, hum, or poor volume behavior.
- Your active speakers have only analog inputs, but your source is digital and you want a dedicated USB conversion stage.
- You need a particular digital input, output format, volume control, or headphone connection that the speaker does not provide.
- You prefer to keep conversion in a separate component while changing speakers later.
For an analog-only speaker, connect the source to the external DAC digitally, then connect the DAC’s analog line output to the speaker. Keep the DAC’s output at a safe fixed or adjustable line level and use one volume control consistently to avoid unexpectedly loud playback.
Rank #3
- RCA-type input R/L
- RCA-type output R/L
- Ground terminal
- Power Adapter Included
When a separate preamp is required
A preamp selects sources, controls volume, and brings very low-level signals up to line level. Most modern sources already output line level, and many active speakers include basic volume and input controls, so a separate preamp is usually unnecessary.
The turntable exception: cartridge level versus line level
A phono cartridge produces a much weaker, equalization-dependent signal than the line-level input expected by an active speaker. If the turntable has no built-in phono preamp, add an external phono preamp for turntable use between the turntable and the speaker:
- Connect the turntable’s left and right outputs to the phono preamp’s input. Attach the turntable ground wire to the preamp ground terminal when the equipment provides one.
- Set the turntable’s output mode to phono, if it has a selectable switch. Do not enable two phono stages in series.
- Connect the phono preamp’s line output to the active speaker’s RCA or other line-level input.
- Select that input and raise volume gradually.
A turntable with an integrated phono preamp can normally connect directly when its output is set to line. If the turntable offers both phono and line modes, use line when connecting to a standard powered-speaker input. A separate DAC is not involved unless you deliberately add a digital conversion step.
Can you use an AV receiver or stereo amplifier with active speakers?
Yes, but only through a line-level signal path. The safe arrangement is:
Rank #4
- Convert Phono Signal: The turntable preamp converts phono signals to line level for better sounding audio and volume.This state-of-the-art circuitry phono preamp can accommodate magnetic pickups with an input sensitivity of 3mV at 50K Ohms Please make sure that the turntable you are connecting to use does not have a built-in preamp, if it does then using this phono preamp may result in bad noise.
- Low Noise Operation: The phono preamp offers outstanding performance with it’s Low-Noise Audio Operational Amplifiers.The output is 2V max (P-P) at 10K Ohms. It’s better to position the preamp close to the source to reduce unwanted noise and interferenceMake your vinyl records deliver sound exactly as it's read from your turntable's needle.
- RCA Input & RCA Output: This mini preamp has stereo RCA inputs and stereo RCA outputs. Connect the turntable to the RCA inputs and ground Then, connect the amplifier receiver to the RCA outputs(DC 12V Adapter is included).
- Simple Plug & Play: Connect any phono turntable preamps to modern sound equipment without specialized phono input for amplifying music.Simply hook up the preamp to both turntable and audio device so you can enjoy vinyl in no time.For the receiver, this can be connected to speakers, computers, laptops and more
- 1 Year Warrranty: We guarantee this electric phono preamplifier with both a 30-day, no hassle money back return policy and a 1 year manufacturer’s guarantee.
- Connect sources to the receiver if you want the receiver to switch inputs.
- Use the receiver’s RCA preamp output, zone output, or another explicitly line-level output.
- Connect that output to the active speaker’s line input.
- Control volume from the receiver or speakers, depending on the system design.
Never connect an active-speaker input to the receiver’s amplified speaker terminals. Those terminals are designed for passive speakers and carry power from the receiver’s output stage. Feeding them into an already amplified speaker can cause clipping, failure, or permanent damage. Audioengine’s support guidance specifically warns that connecting powered-speaker inputs to the speaker outputs of a stereo receiver or power amplifier can damage the equipment.
How to identify the correct receiver output
- Usually suitable: “Pre Out,” “Line Out,” “Zone Out,” or a clearly labeled fixed/variable line-level output.
- Not suitable: “Speaker A/B” terminals, binding posts, banana-plug outputs, or bare-wire terminals.
- Check first: Some outputs are fixed while others follow the receiver’s volume control. A fixed output requires volume adjustment elsewhere.
Source-by-source setup matrix
| Source or task | Separate amplifier | Separate DAC | Separate preamp | Correct connection |
|---|---|---|---|---|
| Phone or computer into a supported analog or wireless input | No | Usually no | No | Connect directly to the matching speaker input. |
| Computer into the speaker’s USB or optical input | No | No, when the speaker provides that digital input and its internal DAC | No | Connect digitally and select that input. |
| Computer with noisy analog output and analog-only speakers | No | Optional external USB DAC | No | Computer USB to DAC, then DAC line output to the speaker. |
| Turntable with built-in phono preamp set to line | No | No, unless you choose a digital path | No | Turntable line output to the speaker’s line input. |
| Turntable without a built-in phono preamp | No | No | Yes: external phono preamp | Turntable to phono preamp, then preamp line output to the speaker. |
| AV receiver used as a source switcher | No power amp into the speakers | Depends on the receiver and speaker path | The receiver’s line-level/preamp output may be used | Receiver preamp or line output to the active-speaker input. |
Safe connection procedure for a new system
- List the source output type. Identify whether it is phono-level, analog line-level, USB, optical, Bluetooth, HDMI ARC, or balanced XLR.
- Read the active speaker’s input labels. Match the source to an input explicitly designed for that signal. Do not assume that a connector’s shape tells you its electrical level.
- Locate conversion. For digital sources, decide whether conversion will occur in the speaker, an external DAC, or the source device. Use one intended conversion path.
- Check the turntable mode. Use a built-in phono stage in line mode, or add one external phono preamp when the turntable outputs raw phono level.
- Power down before changing unfamiliar connections. Connect cables fully, set volume low, then power the source and speakers back on.
- Test one source at a time. Confirm left/right balance, clean output, and volume control before adding a receiver, subwoofer, DAC, or additional source.
Features that vary by active-speaker model
“Active” describes the presence of amplification, not a universal feature set. Before buying cables or extra components, verify:
- Inputs: analog RCA, 3.5 mm, USB, optical, Bluetooth, HDMI ARC, or balanced XLR.
- Output options: subwoofer output, headphone output, pass-through, or a second line output.
- Volume behavior: front-panel control, remote, app, fixed output, or variable output.
- Amplifier layout: amplification in one speaker versus separate amplification in both cabinets.
- Digital support: which sample rates, formats, and operating systems the USB or optical input accepts.
For example, Audioengine’s A5+ documentation identifies amplification in the left speaker and describes pairing with its D1 DAC for desktop use. That illustrates why the exact model manual matters: two active-speaker systems can both eliminate a power amplifier while offering different digital inputs, controls, and expansion options.
Troubleshooting common connection problems
No sound from a computer
Confirm that the operating system is sending audio to the intended USB, optical, Bluetooth, or analog output; select the matching speaker input; and check both the computer and speaker volume. If using USB, verify that the speaker appears as an audio device. If using optical, make sure the computer is outputting a supported PCM signal when the speaker does not decode surround formats.
Best Value
- UNCOMPROMISED PHONO AMPLIFICATION AND EQUALIZATION - Precisely converts the turntable phono signal to line level, featuring an ultra high-accuracy frequency response to faithfully reproduce the original recording to the RIAA standard
- SOPHISTICATED CIRCUIT DESIGN ENGINEERED WITH PREMIUM COMPONENTS - High accuracy components, low noise power supply, and low impedance output stage achieve greater RIAA specification, gain performance and lower distortion
- VIVID STEREO SOUNDSTAGE - Utilizing individual left and right channel OP amps provide optimal channel separation and virtually no crosstalk during signal reproduction and amplification stages
- LOW FREQUENCY RUMBLE FILTERING - This selectable high pass filter rolls off the low end frequencies below 20Hz. This slow gentle roll off is helpful to reduce subsonic resonant feedback and noise when listening at loud volumes
- PROTECTED FROM ANY ELECTRONIC INTERFERENCE - Internal metal shielding enclosure to block electro-magnetic interference and electronic noise
Hum or buzzing from an analog source
Lower the computer’s analog output and test a direct connection. If the noise disappears with an external USB DAC, the computer’s analog stage or grounding may be the cause. With a turntable, connect the ground wire where required and keep signal cables away from power adapters.
Very quiet or thin turntable playback
The turntable is probably feeding phono-level output into a line input. Enable its built-in preamp and select line mode, or insert an external phono preamp. Do not compensate by turning the speaker volume to maximum; the signal still needs the correct gain and equalization.
Damage risk after connecting a receiver
Stop playback and disconnect immediately if the active speaker was connected to speaker terminals. Inspect the receiver and speaker for abnormal heat, odor, or distortion, and consult the equipment manufacturer before powering the system again. Reconnect only from a receiver preamp or line-level output.
Choosing between direct connection and separate components
Use the simplest direct connection when your speaker accepts the source and provides the controls you need. Add an external DAC when the source’s analog output is noisy or you need capabilities the speaker lacks. Add a phono preamp only when the turntable does not already provide line-level output. Use a receiver or line-level preamp when you need several sources, centralized switching, or outputs such as a subwoofer, headphones, or balanced connections.
The deciding factors are signal compatibility, the location of digital conversion, control and switching needs, expandability, and connection safety—not the fact that the speakers are active. Once those requirements are mapped, the system usually needs fewer boxes than a passive-speaker setup.
Quick Recap
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
