The Blackstar U250 15" 250W Bass Amp - Unity Seriesis a Unity Series 15" 250W bass amplifier designed to deliver versatile tones, built-in effects, and stage-worthy power for bassists recording in the studio and performing in concerts. It features 250W of solid-state power driving a custom-designed Eminence Opus 15" speaker mounted in a closed-back cabinet. Available via dedicated top-panel controls are three amp voices, three overdrive types, and three power amp response types. Built-in adjustable effects include chorus, octaver, and compression. A footswitch is provided for hands-free toggling of the chorus and octaver.

Effectively manage your gain structure using the input gain, clip indicator, -10 dB pad, master volume. The pad allows easy accommodation of basses with low-output passive pickups or hot active electronics. Shape your tone with the 3-band EQ, which boasts a semi-parametric mid band.

Connect your mobile device to the 3.5mm aux input and play along with backing tracks or your favorite songs. Utilize the 1/4" series effects loop to patch in your own stompboxes or rack effects. Output connections include an XLR for linking to a Blackstar U250ACT (available separately), an XLR line output with a ground-lift switch, and a 1/4" headphone jack with an independent level control. A USB audio output allows direct recording to your computer. Speaker emulation for the USB and line/headphone outputs is selectable via a rear-panel button.

Custom Eminence Opus 15" Speaker    250W of Solid-State Power    3 Voices, 3 Overdrives & 3 Responses    3-Band EQ with Semi-Parametric Mid Band    Foot-Switchable Chorus & Octaver    Built-In Compressor    Input Gain, Pad Switch & Master Volume    1/4" Effects Loop, USB Audio Output    3.5mm Aux Input    Cab Link, XLR & 1/4" Headphone Outputs

250W of solid-state power through a custom-designed Eminence Opus 15" speaker

Selectable Voices: Classic for valve-inspired growl with vintage EQ, Modern for high-headroom dynamics and advanced EQ, and Flat for clean transparency

Selectable response control provides the compression and feel of different power amp stages—Linear for power and articulation, 6L6 for the compression and punch of 6L6 power tubes, and 6550 for the dynamics and headroom of high-power 6550 tubes

Selectable Overdrive: Overdrive for a smooth, open, harmonically rich grit, Distortion for balanced pedal-like distortion, and Fuzz for full-on fuzz

3-band EQ with semi-parametric mid band

Chorus and octaver selectable via top panel or footswitch

Rear-panel controls for chorus level and octave blend

Built-in compressor with on/off switch and rotary control

Input gain control, switchable -10 dB pad, and master volume

LED indicators for input clipping and power status

1/4" series effects loop

3.5mm aux input for playing along with music from your mobile device

Dedicated Cab Link XLR output allows linking to a U250ACT Unity 250 active cabinet (available separately)

XLR 3-pin line output with ground-lift switch

1/4" line/headphone output with independent level control

Selectable speaker-emulated output mode

Top-panel carry handle

Includes footswitch and power cable

Protective metal corners

USB audio output for direct recording to a computer

Related Questions and Answers

Q: 1. Does this device allow two Bluetooth connections at the same time? Such as iPod and phone?

A: The Blackstar Tone:Link is only able to link with a single device at a time.

Q: 2. Have sing karaoke on jbl srx835p?

A: This speaker would be powerful when used in a professional Karaoke set up.

Q: 3. Why do these bulbs not exist in daylight color temperature?

A: That's a good question and something I've wondered about, as well. I know that, as a modeling lamp, they're meant to be easy on the subject's eyes and keep them dilated in between strobe flashes, while emitting just enough light to satisfy the auto-focus needs of the camera. But, as an alternative, I've sucessfully used the long, slim G.E. LED Brightstiks which are daylight balanced to 5000K and fit the E26/27-style base in most strobes. Lumen ratings are limited to 760-1100, however, so you'll give up quite a bit of brightness. I don't find that to be too much of a problem and actually think it's easier on the subject's eyes not having to adapt back and forth from warm to cool light. They support consistent auto white balance, too.

Q: 4. Will this work if the base is e27 ?

A: This bulb is a universal E26 / E27 Edison screw base which fits most monolight strobes and fixtures that accept the standard Edison base.

Q: 5. Would two of these JBL SRX815P 15" Two-Way Bass Reflex Self Powered System (tops), together with two of these JBL SRX818SP (sub-woofers) suffice for a DJ event (EDM or Hip Hop) with 50 people IN AN OPEN SPACE? Or double it up? Also, how would I connect the tops to the subs? (Model number?) Also, any competitor model which you could recommend instead of the JBLs?

A: Although speculative when estimating how well a speaker will fill an open space, each JBL SRX815P 15" Two-Way Bass Reflex Self Powered System offers 2000W of power on its own, which seems significant for a small crowd of 50 people. When paired with the JBL SRX818SP 18" Self-Powered Subwoofer System, source audio would feed the subwoofer, and the subwoofer would feed signal to the tops with standard 3-pin XLR audio cable.

Q: 6. how many speakers total can I connect to this unit - busy restaurant - will they be loud enough without distortion?

A: The number of speakers connected will depend entirely on the speakers' wattage, what their taps are set to, and the way they are wired. The HP-AMP-250BT provides 250w of power, so to prevent clipping the amp the total wattage of speakers connected (+20% for headroom) should be below this number.

Q: 7. Will this work with the formation wedge?

A: Yes it will: Augment the bass of your music and movies with the Bowers & Wilkins Formation Bass Dual 6.5" 250W Wireless Subwoofer. It connects wirelessly to your Bowers & Wilkins Formation series speakers.

Q: 8. Is this lamp safety coated?

A: No, the Impact JDD Lamp (150W, 120V, 3-Pack) are not safety coated bulbs.

Q: 9. Is this a tungsten filament bulb? Or is it fluorescent (CFL)?

A: This is a tungsten lamp with a filament. The color temperature is 2700K

Q: 10. Will it work on my sony alpha to connect my airpods to monitor audio?

A: No. This is a Bluetooth receiver, so it can receive Bluetooth audio and send it out through its 3.5mm jack, but it cannot send Bluetooth audio to devices like headphones or Airpods.