Pocketalker® Ultra – No Accessories

PKT D1-0


Pocketalker® Ultra System amplifies sounds closest to the listener while reducing background noise. Ideal for one-on-one conversation, small-group, and television listening, or conversing in the car. Use with or without hearing aids. Plug in your earpiece, position the microphone near the preferred sound, adjust the volume to your comfort – and start listening.

Compatible with all Williams Sound earphones/headphones (sold separately).

System Includes

1-PKT D1 personal amplifier

1-MIC 014-R plug-in (no cord) microphone

1-BAT 010-2 two AAA alkaline batteries

1-WCA 007 WC 3.5mm male to 2.5mm female cable with mounting clips (12ft)

1-RCS 003 lanyard

*All items can be purchased separately


The Pocketalker 2.0 Personal Amplifier (PKT D1-0 | UPC 707976050076) features:

  • 200 hours of battery life
  • Adjustable tone and volume control
  • Accommodates a variety of earphone and headphone options
  • Use with neckloops and telecoil-equipped hearing aids
  • Amplifies sound for better understanding
  • 5-year warranty – 90 days on accessories

PKT D1-0 architectural and engineering specifications

  • The Williams Sound Pocketalker Ultra (model PKT D1) shall be housed in an ABS plastic, impact-resistant, silver case with a removable battery door. The dimensions shall be 90mm X 55mm X 20mm.
  • The Pocketalker Ultra shall operate on 2x AAA batteries and operate for up to 200 hours continually with disposable alkaline batteries.
  • The Pocketalker Ultra shall have a maximum 130dB output with EAR 013 earphone and have a non-adjustable AGC (Limiter) and external rotary adjust tone control. The Pocketalker Ultra shall have a combination ON/OFF rotary volume control and a red power LED that will flash to signal when the battery level is low. The Pocketalker Ultra shall have 3.5mm mono microphone and earphone jacks.
  • The Pocketalker Ultra shall have a removable belt clip for hands-free operation and a lanyard connection at the bottom of the case. The Pocketalker Ultra shall have CE approval and be compliant with RoHS and WEEE regulations.
  • The Pocketalker Ultra shall have a five-year warranty excluding earphones, headphones, batteries, chargers, belt clip and other accessories.
  • The Pocketalker Ultra shall be the Williams Sound model PKT D1.

PKT D1-0

Dimensions: 3.38″L x 2.23″W x .88″ THK. (85.8mm x 56.6mm x 22.3 mm) (Not including belt clip or microphone assembly)
Weight: 2.5 oz. (70.9 grams) (with batteries and microphone)
Color/material: Silver gray, ABS/Polycarbonate molded plastic case.
Battery Type: Two 1.5V (AAA size) alkaline
Battery Life: Up to 200 hours (typical usage)
Low Battery Indicator: Red light on top panel flashes.
Microphone: Omnidirectional, electret microphone assembled in housing with foam wind screen and 3.5mm mono plug.
Tone Control: External rotary control knob to allow user to optimize hearing.
Volume Control: External rotary control knob with power ON-OFF switch.
Microphone Jack: 3.5 mm, mono, gold plated mini plug.
Headphone Jack: 3.5 mm, mono, nickel plated mini plug.
Accessories included: Belt clip: Allows the user to wear the unit on a belt.

Lanyard: Allows the user to wear around the neck.

TV listening extension cord: extends the microphone to 12 ft.

Options: Unit comes packaged with one of the Williams Sound options: Mini earphone, single (EAR 013)

Dual mini earbud (EAR 014)

Wide range earphone; single (EAR 008)

Lightweight headphone (HED 021)

Wide range headphone (HED 026)

Induction neck loop (NKL 001)

Approvals: CE, RoHS, WEEE
Warranty: 5 years, parts and labor (90 days on accessories)
Electrical Specifications (1k Hz ref.): Power output: 50 mW (max) into 16 ohms

AGC: Limits maximum output level

Distortion: 2% THD (max)
Frequency Response: Tone at high position: 11dB boost at 5kHz, 8dB cut at 400 Hz.

Tone at mid position: 0dB boost at 5kHz, 4dB cut at 400Hz.

Tone at low position: 3dB cut at 5kHz, 4dB boost at 400 Hz.

Acoustic Specifications: Typical values (ANSI S3.22-1987)

Lightweight headphone, HED 021: (with 6cc coupler)
Test Tone High Tone Mid Tone Low
SSPL90 124.3 dB 124.8 dB 124.8 dB
HF Ave (SSPL90) 120.7 dB 120.6 dB 120.5 dB
HF Ave full on gain (50 dB) 46.9 dB 44.9 dB 41.0 dB
Ref test gain 43.7 dB 43.6 dB 41.5 dB
Wide range headphone, HED 026: (with 6cc coupler)
Test Tone High Tone Mid Tone Low
SSPL90 121.4 dB 125.3 dB 124.8 dB
HF Ave (SSPL90) 119.5 dB 120.7 dB 120.9 dB
HF Ave full on gain (50 dB) 45.6 dB 44.8 dB 41.2 dB
Ref test gain 42.5 dB 43.7 dB 41.7 dB
Mini earphone single, EAR 013: (with 2cc coupler)
Test Tone High Tone Mid Tone Low
SSPL90 123.8 dB 124.0 dB 123.2 dB
HF Ave (SSPL90) 118.7 dB 118.6 dB 118.6 dB
HF Ave full on gain (50 dB) 44.7 dB 44.2 dB 38.9 dB
Ref test gain 41.7 dB 41.6 dB 39.2 dB


MIC 014-R

Phantom Powered No
Pick-Up Pattern Omni-directional
Element Electret Condenser
Mic Diameter 10 mm not including windscreen 19 mm with windscreen
Sensitivity -42 dB ± 3 dB
Frequency Range 20 Hz - 16 kHz
Output Impedance 2.2 kΩ
Standard Operation Range 2 - 10 V DC
Signal-to-Noise Ratio [gt]58 dB
Replacement Windscreen WND 002
Optional 12 ft Extension Cord WCA 007
Optional Microphone Clip CLP 014
Color Gold
Weight 5 g (0.2 oz)
Plug 3.5 mm mono
Cord None
Approvals RoHS
Warranty 90 days


5 Years